robert o. norris bridge deck overlay
TRANSCRIPT
ROBERT O. NORRIS BRIDGE DECK OVERLAY
Robert Ridgell, P.E.
VDOT Area Construction Engineer
May 30, 2018
Robert O. Norris Bridge over Rappahannock RiverRoute 3 – Middlesex County and Lancaster County
• Built in 1957
• Major rehabilitation in 1996
• 9,998 feet long, which is nearly 2 miles
• 23 feet curb to curb
• 2 travel lanes
• 8,200 vehicles on weekdays (average)
• 6,320 vehicles on weekends (average)
• Annual bridge inspection
• Rating of fair – a “5” on a 0-9 bridge inspection
scale used nationally
3
• Work to paint center bridge spans complete by
June 22, 2018
• Finishes effort to paint entire Norris Bridge
• New paint protects structural steel from
deterioration
• $1 million spot structural steel repairs completed
during painting project
• 24-hour temporary traffic signals will be removed
when project is complete in late June
Wrapping Up: Norris Bridge Painting Project
4
• Begins June 11, 2018
• Contractor targets completion for August 11, 2018
• Must be completed by Nov. 1, 2018 under contract
• Milling existing deck overlay, which is a combination of
concrete and asphalt
• Paving new overlay
• Contractor: Allan Myers
• $5.4 million estimated cost
What’s Next: Norris Bridge Deck Overlay Project
5
What is a bridge deck overlay?
6
• Travel surface on the bridge
• Acts as a protective layer coating the bridge’s steel grid deck
• Smooths the ride for motorists
• Steel grid deck is what supports weight of vehicle traffic, not the travel surface
Why does the deck overlay need to be replaced?
7
• Current overlay has reached end of its service life
• Frequent unscheduled repairs to fix concrete breakup
• Drivers face unanticipated delays
• Need for improved protection over steel grid deck
• Thermoplastic polymer additive
• When mixed with conventional asphalt,
the combination becomes a waterproof material
• Improves skid resistance
• Protects steel grid deck underneath
• Must be applied at optimal
temperatures for quality
What is Rosphalt, and why use it?
8
Left: Tappan Zee Bridge, Hudson
River, Credit: New NY Bridge
• Drivers can expect 5-10 min. of delay or less on most crossings
• 24-hour mobile paving work zone on Mondays – Fridays
• No work scheduled Saturdays and Sundays
• One-way, alternating traffic
• Traffic controlled by Automated Flagging Assistance Device
• Certified flagger is operating flagging devices from nearby
vehicle to repair any malfunctions and oversee traffic flow
What to expect during construction
9
• Speed limit reduced to 35 mph during project
• Drivers will be traveling next to heavy equipment
• Light stands switched on at night
• No steel plates
• Potential for brief rough ride when traveling on milled surface, steel grid deck
What to expect during construction
10
• Vehicle width restriction of 9 feet
• Overnight closure and 85-mile detour will be needed for at least
one evening, with several evenings potentially needed
• Specific bridge closure date or dates will be announced in advance to help the
community plan
• Emergency vehicles will always be permitted to pass through the work zone
What to expect during construction
11
• Pin replacement – 2 locations
• Annual bridge inspection in October
• Bridge cleaning
Additional bridge maintenance
12
Find real-time traffic and work zone info on 511Virginia.org
Follow us on Twitter: @VaDOTFRED
Facebook: Fredericksburg District Group
13
Thank you!
Robert Ridgell, Area Construction Engineer
(540) 899-4288
Kelly Hannon, VDOT Communications Manager
(540) 374-3344