US Bridges

US Route 1 & Pw RR over Quinnipiac River

Fair

New Haven County, Connecticut · 0.2 MI S of I-95 Q-Bridge · Structure no. 00337

Built
2002
23 years old
Condition
Fair
inspected January 2023
Type
Movable - Lift
Steel
Length
936 ft
1 main span
Daily traffic
12,400
2018 count
Owner
State
State Highway Agency

About this bridge

US Route 1 & Pw RR over Quinnipiac River is a steel movable - lift carrying US Route 1 & Pw RR over Quinnipiac River in New Haven County, Connecticut. It was built in 2002, so it is 23 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 12,400 vehicles a day, roughly 6% of them trucks, projected to reach 18,425 by 2038. The structure is 936 ft (285.3 m) long and 89 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS Route 1 & Pw RR
CrossesQuinnipiac River
Location0.2 MI S of I-95 Q-Bridge
RouteU.S. Route 1
CountyNew Haven County
StateConnecticut
Coordinates41.29807, -72.90504
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20
Structure length936 ft (285.3 m)
Longest span270 ft (82.3 m)
Deck width89 ft (27.1 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic12,400 (2018)
Projected traffic18,425 by 2038
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and railroad
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US Route 1 & Pw RR over Quinnipiac River built?

It was built in 2002, making it 23 years old in 2025.

What condition is US Route 1 & Pw RR over Quinnipiac River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2023.

How much traffic does US Route 1 & Pw RR over Quinnipiac River carry?

About 12,400 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is US Route 1 & Pw RR over Quinnipiac River?

The structure is 936 ft (285.3 m) long with a longest span of 270 ft (82.3 m) and a deck 89 ft wide.

Who owns US Route 1 & Pw RR over Quinnipiac River?

It is owned by the State Highway Agency.