pd&e noise study report€¦ · 18/08/2019 · pd&e noise study report 40th avenue ne over...

STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION

TECHNICAL REPORT COVERSHEET 650-050-38

ENVIRONMENTAL MANAGEMENT

06/29

PD&E Noise Study Report

Florida Department of Transportation

District Seven

40TH AVENUE NE OVER PLACIDO BAYOU

Limits of Project: FROM 12TH STREET NE TO WEST OF 13TH WAY NE

Pinellas County, Florida

Financial Management Number: 443600-1-32-01

ETDM Number: 14377

August 2019

The environmental review, consultation, and other actions required by applicable federal environmental laws for this project are being, or have been, carried out by FDOT pursuant to 23 U.S.C. § 327 and a Memorandum of Understanding dated December 14, 2016 and executed by FHWA and FDOT.

PD&E Noise Study Report 40th Avenue NE over Placido Bayou

August 2019

City of St. Petersburg Project No.: 18032-110

Work Program Item Segment No.: 443600-1

ETDM No.: 14377

Federal Aid Project No.: TBD

The environmental review, consultation, and other actions required by applicable federal

environmental laws for this project are being, or have been, carried out by the Florida Department of Transportation

(FDOT) pursuant to 23 U.S.C. § 327 and a Memorandum of Understanding dated

December 14, 2016 and executed by the Federal Highway Administration and FDOT.

Submitted pursuant 49 U.S.C. § 303.


June 2019 i

Table of Contents 1 Executive Summary ........................................................................................................... 1

2 Introduction ........................................................................................................................ 2 2.1 Project Description .............................................................................................................. 2 2.2 Purpose ............................................................................................................................... 3 2.3 Need .................................................................................................................................... 3 2.4 Project Status ...................................................................................................................... 3

3 Methodology ....................................................................................................................... 4 3.1 Evaluation Process .............................................................................................................. 4 3.2 Noise Metrics ....................................................................................................................... 4 3.3 Traffic Data .......................................................................................................................... 4 3.4 Noise Abatement Criteria .................................................................................................... 5

4 Traffic Noise Analysis ........................................................................................................ 7 4.1 Noise Sensitive Receptors .................................................................................................. 7 4.2 Measured Noise Levels ....................................................................................................... 7 4.3 Results of the Noise Analysis .............................................................................................. 8 4.4 Statement of Likelihood ....................................................................................................... 8

5 Noise Contours ................................................................................................................ 10

6 Construction Noise and Vibration .................................................................................. 11

7 Public Involvement .......................................................................................................... 12

8 References ........................................................................................................................ 13

Appendices Appendix A Traffic Data for Noise Studies Appendix B Validation Documentation

Tables 3-1. Traffic Data ........................................................................................................................................... 4

3-2. FHWA/FDOT Noise Abatement Criteria ............................................................................................... 5

3-3. Typical Noise Levels ............................................................................................................................. 6

4-1. Validation Data ...................................................................................................................................... 8

4-2. Predicted Traffic Noise Levels .............................................................................................................. 8

5-1. Noise Contours ................................................................................................................................... 10

Figures 2-1. Location of the 40th Avenue NE Bridge ................................................................................................ 2

2-2. Bridge Typical Section .......................................................................................................................... 3

4-1. Noise Sensitive Receptor Locations ..................................................................................................... 7


June 2019 1

1 Executive Summary

This project will replace the existing 40th Avenue NE Bridge (No. 157154) in St. Petersburg, FL. The project limits extend from 12th St. NE to west of 13th Way NE, a distance of 0.15 miles. The existing 40th Avenue Bridge was a two lane facility with a median auxiliary lane and sidewalks that tied into the roadway approaches with similar configurations. However, the bridge has been reconfigured as part of a temporary emergency repair. The auxiliary lane in the median and one of the sidewalks are now closed. Vehicular traffic has been diverted to the south side of the bridge and pedestrian traffic has been diverted to the north side of the bridge. The new bridge will accommodate two lanes of traffic, bicycle lanes, and sidewalks.

Because the new bridge would substantially alter the vertical alignment of the travel lanes (i.e., move the travel lanes such that the line-of-sight between the noise sensitive land use and the road is exposed), the project is considered a Type I highway traffic noise project. Therefore, as required by the FDOT’s Noise Policy, a highway traffic noise analysis was performed. The objective of this PD&E Noise Study Report (NSR) is to present the result of the analysis (i.e., identifying noise-sensitive sites adjacent to the project location, evaluating future traffic noise levels at the sites with and without the proposed improvements, and evaluating the need for, and effectiveness of, noise abatement measures). Additional objectives include the consideration of potential construction noise impacts and the identification of noise impact “contours” adjacent to the corridor.

The analysis was performed following FDOT procedures that comply with Title 23, Part 772 of the Code of Federal Regulations (23 CFR 772), Procedures for Abatement of Highway Traffic Noise and Construction Noise. The evaluation uses methodologies established by the FDOT and documented in the FDOT’s Noise Policy (Part 2, Chapter 18 (Highway Traffic Noise) of the PD&E Manual (January 2019)). The prediction of existing and future traffic noise levels with and without the roadway improvements was performed using the Federal Highway Administration’s (FHWA’s) Traffic Noise Model (TNM-Version 2.5).

A total of six noise sensitive receptors were evaluated. Four of the receptors were evaluated for residences located both east and west of the bridge and two receptors were evaluated on the docks at the residences on the west end of the bridge. These noise sensitive land uses were identified during a field review that was conducted on February 1, 2019.

The results of the analysis indicate that existing (2018) and future (2038) traffic noise levels without the proposed improvement (No Build Alternative) range from 54.5 to 60.1 decibels on the “A”-weighted scale (dB(A))--levels that do not approach, meet, or exceed the Noise Abatement Criteria (NAC). In the future (2038) with the proposed project improvements (Build Alternative), exterior traffic noise levels are predicted to range from 55.9 to 60.7 dB(A) – levels that also do not approach, meet, or exceed the NAC. The results of the analysis also indicate that when compared to existing conditions, traffic noise levels would not increase more than 2.5 dB(A) above existing conditions with the proposed project improvements. As such, the project would not substantially increase traffic noise (i.e., increase traffic noise 15 dB(A) or more) at any of the evaluated receptors. As such, based on the results of the highway traffic noise analysis, the proposed project would not impact the noise sensitive land uses within the project limits.

Although the residences within the project limits are considered to be sensitive to construction noise and vibration, the proposed bridge replacement is not expected to have a significant noise or vibration impact. Application of the FDOT Standard Specifications for Road and Bridge Construction would minimize or eliminate the potential for construction noise or vibration impacts. Should unanticipated noise or vibration issues arise during the construction process, the Contractor, in coordination with the City of St. Petersburg, will investigate additional methods of controlling these impacts.

It is anticipated that the land uses within the project limits would remain residential. Should other land uses (e.g., motels, medical facilities, schools, churches, recreation areas, and parks) be considered in this area in the future, noise level contours were developed which delineate the distance from the roadway travel lane at which highway traffic noise could have a potential impact. City of St. Petersburg officials will retain a copy of the NSR that provides the contours.


June 2019 2

2 Introduction

2.1 Project Description

This project will replace the existing 40th Avenue NE Bridge (No. 157154) in St. Petersburg (Figure 2-1). The project limits extend from 12th Street NE to west of 13th Way NE, a distance of 0.15 miles. The existing 40th Avenue Bridge was a two lane facility with a median auxiliary lane and sidewalks that tied into the roadway approaches with similar configurations. However, the bridge has been reconfigured as part of a temporary emergency repair. The auxiliary lane in the median and one of the sidewalks are now closed. Vehicular traffic has been diverted to the south side of the bridge and pedestrian traffic has been diverted to the north side of the bridge.

Figure 2-1. Location of the 40th Avenue NE Bridge

The new bridge will accommodate two lanes of traffic, bicycle lanes, and sidewalks. The bridge typical section is shown in Figure 2-2.


June 2019 3

Figure 2-2. Bridge Typical Section

2.2 Purpose

The purpose of this project is to address structural deficiencies of the existing 40th Avenue NE Bridge. The current bridge structure was constructed in 1961 and widened in 1990. It is considered structurally deficient by the Florida Department of Transportation (FDOT) and therefore is scheduled for replacement.

2.3 Need

This project is needed due to the fact that the existing 40th Avenue Bridge is considered structurally deficient by the FDOT. During the routine bridge inspection on July 31st, 2017 and a subsequent follow-up field review on August 10th, 2017, numerous areas of spalling with exposed prestressing strands with numerous broken wires and up to 100% section loss were found in Slab Units 4-5 thru 4-11. This resulted in a special load rating, closure of the damaged portions of the bridge to traffic, and new weight limits on the bridge. The bridge sufficiency rating was down-graded to a 21 from the rating of 72.7 in the previous 2015 routine bridge inspection. In addition to slab unit deterioration, the bridge piles have also deteriorated. They are exhibiting cracking or spalling and were all ranked at Condition State 3 in the 2017 inspection.

2.4 Project Status

This project is not currently identified in Forward Pinellas’s Long Range Transportation Plan. It is, however, being added to their Transportation Improvement Program document. The City of St. Petersburg has included in their FY19 budget funds for the Project Development and Environmental (PD&E) Phase and Design Phase for 40th Avenue NE Bridge Replacement. The bridge construction cost is estimated at $6.3M. Construction is to be funded by the City in FY20 with reimbursement funds of $3.75M identified in FDOT’s Work Program in FY 22 ($383,707) and FY 24 ($3,366,293).


June 2019 4

3 Methodology

3.1 Evaluation Process

The project was reviewed for applicability of Part 772 of Title 23 of the Code of Federal Regulations (23 CFR 772), Procedures for Abatement of Highway Traffic Noise and Construction Noise, and the policies and procedures for traffic noise analysis documented in the FDOT’s Noise Policy (PD&E Manual, Part 2, Chapter 18 (Highway Traffic Noise, January 14, 2019)).

The improved bridge would be elevated five feet higher above the mean high water level at the navigational channel than the existing bridge. This increase in elevation could be considered a substantial vertical alteration of the roadway alignment which, following FDOT policies and procedures, classifies the project as Type I for highway traffic noise. An analysis to determine if land uses for which there are Noise Abatement Criteria (NAC) would be impacted by traffic noise is therefore required.

The analysis was performed using the FHWA’s Traffic Noise Model (TNM, Version 2.5). Use of the TNM is required when evaluating the potential for traffic noise impacts during the design year of roadway improvement projects for which the regulations, policies and guidelines stipulated in 23 CFR 772 and the FDOT’s Noise Policy are applicable.

3.2 Noise Metrics

The predicted traffic noise levels presented in this report are expressed in decibels on the “A”-weighted scale (dB(A)). This scale most closely approximates the response characteristics of the human ear to traffic noise. All traffic noise levels are reported as equivalent levels (Leq(h)). Levels reported as Leq(h) are equivalent steady-state sound levels that contain the same acoustic energy as time-varying sound levels over a period of one hour.

3.3 Traffic Data

Traffic noise levels are low when traffic volumes are low (Level of Service [LOS] A or B). Traffic noise levels are also low when traffic is so congested that vehicle movement is slow (LOS D, E, or F). For these reasons, it is generally regarded that the maximum hourly noise level occurs between these two conditions (i.e., LOS C—a condition that represents the period when the maximum number of vehicles can traverse a segment of roadway at the posted speed).

LOS C traffic data were used in the TNM to predict both existing (year 2018) and future (year 2038) traffic noise levels. These data are presented in Table 3-1. Additional traffic-related factors (e.g., truck factors) that were used to derive the TNM input are provided on the Traffic Data for Noise Studies form provide in Appendix A. Notably, because the capacity of the bridge would remain the same, the traffic volumes used to evaluate both the existing and future conditions (both with and without the Build Alternative) are the same.

Table 3-1. Traffic Data

SCENARIO PEAK DIRECTION, HOURLY VOLUME

OFF-PEAK DIRECTION,

HOURLY VOLUME POSTED

SPEED (MPH)

Existing 358 234 30

No-Build 358 234 30

Build 358 234 30


June 2019 5

3.4 Noise Abatement Criteria

For the purpose of evaluating traffic noise, the FHWA established NAC. As shown in Table 3-2, these criteria vary according to a properties’ activity category (i.e., land use). For comparative purposes, typical noise levels for common indoor and outdoor activities are provided in Table 3-3.

When predicted traffic noise levels “approach” or exceed the NAC, or when predicted future noise levels increase substantially from existing levels, 23 CFR 772 requires that noise abatement measures be considered. For the purpose of complying with 23 CFR 772, FDOT’s Noise Policy defines the word “approach” to mean within 1 dB(A) of the NAC. The FDOT’s NAC are also provided in Table 3-2. 23 CFR 772 and the FDOT’s Noise Policy also state that a traffic noise impact is predicted to occur when the increase in traffic noise levels with a proposed improvement is substantial when compared to existing levels. The FDOT considers that a substantial increase occurs when traffic noise levels are predicted to increase 15 dB(A) or more above existing conditions as a direct result of a transportation improvement project.

Table 3-2. FHWA/FDOT Noise Abatement Criteria

ACTIVITY CATEGORY DESCRIPTION OF ACTIVITY CATEGORY

ACTIVITY LEQ(H)1

FHWA FDOT

A Lands on which serenity and quiet are of extraordinary significance and serve an important public need and where the preservation of those qualities is essential if the area is to continue to serve its intended purpose.

57

(Exterior)

56

(Exterior)

B2 Residential 67

(Exterior)

66

(Exterior)

C2

Active sports areas, amphitheaters, auditoriums, campgrounds, cemeteries, day care centers, hospitals, libraries, medical facilities, parks, picnic areas, places of worship, playgrounds, public meeting rooms, public or nonprofit institutional structures, radio studios, recording studios, recreational areas, Section 4(f) sites, schools, television studios, trails, and trail crossings.

67

(Exterior)

66

(Exterior)

D Auditoriums, day care centers, hospitals, libraries, medical facilities, places of worship, public meeting rooms, public or nonprofit institutional structures, radio studios, recording studios, schools, and television studios.

52

(Interior)

51

(Interior)

E2 Hotels, motels, offices, restaurants/bars, and other developed lands, properties or activities not included in A-D or F.

72

(Exterior)

71

(Exterior)

F

Agriculture, airports, bus yards, emergency services, industrial, logging, maintenance facilities, manufacturing, mining, rail yards, retail facilities, shipyards, utilities (water resources, water treatment, electrical), and warehousing.

-- --

G Undeveloped lands that are not permitted. -- -- 1 The Leq(h) Activity Criteria values are for impact determination only and are not design standards for noise abatement

measures. 2 Includes undeveloped lands permitted for this activity category. Source: CFR, Title 23, Part 772.


June 2019 6

Table 3-3. Typical Noise Levels

Common Outdoor Activities

Noise Level

dB(A) Common Indoor Activities

---110--- Rock band

Jet flyover at 1,000 feet

---100---

Gas lawnmower at 3 feet

---90---

Diesel truck at 50 feet at 50 mph Food blender at 3 feet

---80--- Garbage disposal at 3 feet

Noisy urban area daytime

Gas lawnmower at 100 feet ---70--- Vacuum cleaner at 10 feet

Commercial area Normal speech at 3 feet

Heavy traffic at 300 feet ---60---

Large business office

Quiet urban daytime ---50--- Dishwasher in next room

Quiet urban nighttime ---40--- Theater, large conference room (background)

Quiet suburban nighttime

---30--- Library

Quiet rural nighttime Bedroom at night, concert hall (background)

---20---

Broadcast/recording studio

---10---

---0---

Lowest Threshold of Human Hearing Lowest Threshold of Human Hearing

Source: California Dept. of Transportation Technical Nosie Supplement, Oct. 1998, Page 18.


June 2019 7

4 Traffic Noise Analysis

4.1 Noise Sensitive Receptors

Noise sensitive receptors are discrete representative locations on a noise sensitive land use. The location of the receptors evaluated on the noise sensitive land uses adjacent to the 40th Avenue NE Bridge are shown on Figure 4-1. A total of six noise sensitive receptors were evaluated. These receptors were identified during a land use review conducted on February 1, 2019. The receptors were located at two residences and their boat docks on the west end of the bridge and two residences on the east end of the bridge. Following FHWA/FDOT guidance, these receptors were evaluated as Activity Category “B” (i.e., abatement considered at a predicted traffic noise of 66 dB(A)).

Figure 4-1. Noise Sensitive Receptor Locations

4.2 Measured Noise Levels

Both existing and future noise levels (with and without the proposed bridge replacement) were modeled using the TNM. To verify the accuracy of the predictions, the computer model was validated using field measured noise levels adjacent to the project corridor. Traffic data including motor vehicle volumes, vehicle mix, vehicle speeds, and meteorological conditions were recorded during each measurement period.

The field measurements were conducted in accordance with the FHWA’s Noise Measurement Field Guide. The measurements were obtained using a Larson Davis 831, Type I integrating sound level meter (SLM). The SLM was calibrated before and after the measurement period with a Larson Davis CAL200 calibrator.

The recorded traffic data were used as input for the TNM to determine if, given the topography and site conditions of the area, the computer model could “re-create” the measured levels with the existing roadway. Following FDOT guidelines, a noise prediction model is considered within the accepted level of accuracy if the measured and predicted noise levels are within a tolerance standard of 3 dB(A).

Table 4-1 presents the field measurements and the validation results. As shown, the ability of the model to predict noise levels within the FDOT limits of plus or minus 3 dB(A) for the project was confirmed. Documentation in support of the validation is provided in Appendix B of this NSR.


June 2019 8

Table 4-1. Validation Data

LOCATION MEASUREMENT

PERIOD MEASURED MODELED DIFFERENCE

West end of bridge and south side of 40th Avenue NE

1 65.0 62.8 2.2

2 64.1 62.2 1.9

3 66.0 63.5 2.5

4.3 Results of the Noise Analysis

Table 4-2 presents the results of the traffic noise analysis for the 40th Avenue NE bridge replacement. As shown, the results indicate that the existing (2018) traffic noise level and future (2038) levels without the bridge replacement (No Build Alternative) range from 54.5 to 60.1 dB(A). As such, existing and future traffic noise levels without the bridge replacement would not approach, meet, or exceed the Noise Abatement Criteria (NAC) at the evaluated noise sensitive receptors. As also shown in Table 4-2, in the future with the proposed project improvements (Build Alternative), traffic noise levels are predicted to range from 55.9 to 60.7 dB(A) – levels that also do not approach, meet, or exceed the NAC.

Notably, the results of the analysis also indicate that when compared to existing conditions, traffic noise levels would not increase more than 2.5 dB(A) above existing conditions with the proposed project improvements. As such, the project would not substantially increase traffic noise (i.e., increase traffic noise 15 dB(A) or more) at any of the evaluated receptors.

Table 4-2. Predicted Traffic Noise Levels

Site ID

Activity Category Type Description

Leq(h) (dB(A)) Approaches, Meets, or

Exceeds the NAC?

Existing (2018)

No-Build (2038)

Build (2038)

Increase from

Existing

1a B Residential Residence west of bridge, north side of 40th Ave NE

58.2 58.2 59.4 1.2 No

1b B Residential Boat dock west of bridge, north side of 40th Ave NE

54.8 54.8 55.9 1.1 No

2a B Residential Residence west of bridge, south side of 40th Ave NE

59.9 59.9 60.7 0.8 No

2b B Residential Boat dock west of bridge, south side of 40th Ave NE

54.5 54.5 57.0 2.5 No

3 B Residential Residence east of bridge, north side of 40th Ave NE

60.1 60.1 60.1 0.0 No

4 B Residential Residence east of bridge, south side of 40th Ave NE

56.6 56.6 58.5 1.9 No

4.4 Statement of Likelihood

Based on the results of the noise analysis, there are no highway traffic noise impacted land uses within the project that require abatement consideration. Should the proposed improvements change during the project’s final design phase such that a re-analysis of highway traffic noise is warranted and impacts are identified in the analysis, an evaluation of noise abatement measures would be performed at that time. The


June 2019 9

Florida Department of Transportation is committed to the construction of feasible and reasonable noise abatement measures at noise-impacted locations contingent on the following:

1. Detailed noise analyses during the final design process support the need, feasibility, andreasonableness of providing abatement;

2. Cost analysis indicates that the cost of the noise barrier(s) will not exceed the cost reasonablecriterion;

3. Community input supporting types, heights, and locations of the noise barrier(s) is provided to theDistrict Office; and

4. Safety and engineering aspects as related to the roadway user and the adjacent property owner havebeen reviewed and any conflicts or issues resolved.


June 2019 10

5 Noise Contours

It is anticipated that the land uses within the project limits would remain residential. Should other land uses (e.g., motels, medical facilities, schools, churches, recreation areas, and parks) be considered in this area in the future, noise level contours were developed. The noise contours delineate the extent of the predicted traffic noise impact area from the improved roadway’s edge-of-pavement for each of the land use Activity Categories (Table 3-2). Table 5-1 provides the noise contour distances for Activity Category A, B, C, and E. City of St. Petersburg officials will retain a copy of this NSR to promote compatibility between any futureland developments in this area and the proposed project.

Table 5-1. Noise Contours

DISTANCE FROM IMPROVED ROADWAY’S EDGE-OF-

PAVEMENT (FT)

ACTIVITY CATEGORY A

56 dB(A)

ACTIVITY CATEGORY B/C

66 dB(A)

ACTIVITY CATEGORY E

71 dB(A)

100 0* 0*

* The 66 dB(A) and 71 dB(A) contours do not extend beyond the sidewalk.


June 2019 11

6 Construction Noise and Vibration

All of the residences within the project limits are sensitive to both construction noise and vibration. While construction of the proposed bridge replacement is not expected to have a significant noise or vibration impact on these sites, should unanticipated issues arise during the construction process, the Contractor, in coordination with the City of St. Petersburg, will investigate additional methods (methods other than those in FDOT’s Standard Specifications for Road and Bridge Construction) of controlling these impacts.


June 2019 12

7 Public Involvement

The City of St. Petersburg conducted Public Information Meetings for the 40th Avenue NE Bridge Replacement project on June 11, 2018 at the Shore Acres Recreation Center and on November 27, 2018 at the North East Park Baptist Church. A Public Hearing is also planned for later in 2019. The hearing will inform the public of the results of the PD&E Study obtained to date and provide the opportunity for the public to express their views regarding specific location, design, socio-economic effects, and environmental impacts associated with the bridge replacement.


June 2019 13

8 References

Federal Highway Administration. U.S. Department of Transportation. July 13, 2010. Title 23 CFR, Part 772. Procedures for Abatement of Highway Traffic Noise and Construction Noise.

Federal Highway Administration. February 2004. Traffic Noise Model, Version 2.5.

Federal Highway Administration. December 2011. Highway Traffic Noise: Analysis and Abatement Guidance.

Federal Highway Administration. June 2018. Noise Measurement Field Guide. FHWA-HEP-18-066.

Florida Department of Transportation. January 14, 2019. Project Development and Environment Manual, Part 2, Chapter 18 – Highway Traffic Noise.

Florida Department of Transportation. 2018. Standard Specifications for Road and Bridge Construction.

Florida Department of Transportation. January 1, 2016. Traffic Noise Modeling and Analysis Practitioners Handbook.

June 2019 8

40th Avenue NE over Placido Bayou

APPENDIX

ATRAFFIC DATA FOR NOISE

STUDIES

TRAFFIC DATA FOR NOISE STUDIES

Project: 40th Avenue NE Bridge Replacement Date: 11/6/2018

Pinellas County PID: 18032-110 Prepared By:

Work Program ID: 443600

Segment Description: 40th Ave NE Over Placido Bayou

(Data sheets are to be filled out for every segment having a change in traffic parameters such as volumes, posted speeds, typical section, etc.)

NOTE: Modeled ADT is the LOS(C) volume referenced in the FDOT LOS tables or demand, whichever is less.

Existing Facility No-Build (Design Year) Build (Design Year)

Lanes: 2 Lanes: 2 Lanes: 2

Year: 2018 Year: 2038 Year: 2038

ADT: ADT: ADT:LOS (C) 6,570 LOS (C) 6,570 LOS (C) 6,570

Demand 18,475 Demand 18,475 Demand 18,475

Speed: 30 mph Speed: 30 mph Speed: 30 mph48 kmh 48 kmh 48 kmh

K= 9.0 % K= 9.0 % K= 9.0 %

D= 60.5 % D= 60.5 % D= 60.5 %

T= 3.50 % for 24 hrs. T= 3.50 % for 24 hrs. T= 3.50 % for 24 hrs.

T= 3.11 % Design hr T= 3.11 % Design hr T= 3.11 % Design hr

2.03 % Medium Trucks DHV 2.03 % Medium Trucks DHV 1.60 % Medium Trucks DHV

1.08 % Heavy Trucks DHV 1.08 % Heavy Trucks DHV 1.90 % Heavy Trucks DHV

0.50 % Buses DHV 0.50 % Buses DHV 0.50 % Buses DHV

0.50 % Motorcycles DHV 0.50 % Motorcycles DHV 0.50 % Motorcycles DHV

STAMINA/TNM INPUTThe following are spreadsheet calculations based on the input above - do not enter data below this line

Existing Facility Model: LOS (C) No-Build (Design Year) Model: LOS (C) Build (Design Year) Model: LOS (C)

LOS (C) LOS (C) LOS (C)

Southbound: Autos 343 Southbound: Autos 343 Southbound: Autos 342Med Trucks 7 Med Trucks 7 Med Trucks 6Hvy Trucks 4 Hvy Trucks 4 Hvy Trucks 7Buses 2 Buses 2 Buses 2Motorcycles 2 Motorcycles 2 Motorcycles 2

Northbound: Autos 224 Northbound: Autos 224 Northbound: Autos 223Med Trucks 5 Med Trucks 5 Med Trucks 4Hvy Trucks 3 Hvy Trucks 3 Hvy Trucks 4Buses 1 Buses 1 Buses 1Motorcycles 1 Motorcycles 1 Motorcycles 1

Demand Demand Demand

Southbound: Autos 965 Southbound: Autos 965 Southbound: Autos 961Med Trucks 20 Med Trucks 20 Med Trucks 16Hvy Trucks 11 Hvy Trucks 11 Hvy Trucks 19Buses 5 Buses 5 Buses 5Motorcycles 5 Motorcycles 5 Motorcycles 5

Northbound: Autos 630 Northbound: Autos 630 Northbound: Autos 627Med Trucks 13 Med Trucks 13 Med Trucks 11Hvy Trucks 7 Hvy Trucks 7 Hvy Trucks 12Buses 3 Buses 3 Buses 3Motorcycles 3 Motorcycles 3 Motorcycles 3

S. Joel

40th Avenue NE over Placido Bayou

APPENDIX

BVALIDATION DOCUMENTATION

NOISE MEASUREMENT DATA SHEET

Measurements Taken By: Wayne Arner and Linsey DelGrosso Date: 2/1/19Time Study Started: 1025 Time Study Ended: 1135 Project Identification:

Pinellas County PID: 18032-110 Project Location: 40th Avenue NE Bridge, St. Petersburg

Site Identification: Southeast corner of 40th Avenue NE and 12th Street NE

Weather Conditions: Sky: Clear Partly Cloudy X Cloudy Other Temperature 74.1F Wind Speed calm Wind Direction na Humidity 73%

Equipment: Sound Level Meter:

Type: Larson Davis 831 Serial Number(s): 1285 Did you check the batteries? Yes X No Calibration Readings: Start 114.0 End 114.1 Response Settings: Fast Slow X Weighting: A X Other

Calibrator: Type: Larson Davis CAL 200 Serial Number: 5592

Did you check the battery? Yes X No

TRAFFIC DATA

Roadway Identification 40th Ave NE Westbound 40th Ave NE Eastbound

Vehicle Type Volume (10min) Speed (mph) Volume (10min) Speed (mph) Autos 77-64-99 31.4-30.4-30.4 58-70-69 32.8-30.1-34.5 Medium Trucks 2-1-0 30.0-30.0-NA 3-3-0 27.0-26.7-NA Heavy Trucks 0-0-0 NA-NA-NA 0-0-1 NA-NA-30.0 Buses 0-0-0 NA-NA-NA 0-0-0 NA-NA-NA Motorcycles 0-0-0 NA-NA-NA 0-0-0 NA-NA-NA Duration Three 10 minute runs Three 10 minute runs

RESULTS [dB(A)]

LEQ : 65.0-64.1-66.0

Background Noise: None detectable above traffic noise Major Sources: 40th Avenue NE traffic Unusual Events: Flyover during each run. Pile driving during runs 1 and 3. FedEx truck idling and backing alarms during run 2. Car passbys and idling at 12th Street NE stop sign.

pd&e noise study report€¦ · 18/08/2019 · pd&e noise study report 40th avenue ne over...

Documents