US Bridges

Quinnipiac Street over Quinnipiac River

FairPosted for load

New Haven County, Connecticut · 150 Ft E. of Route 15 · Structure no. 03734

Built
1938
87 years old, rebuilt 1996
Condition
Fair
inspected March 2023
Type
Channel Beam
Prestressed Concrete
Length
126 ft
2 main spans
Daily traffic
12,500
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Quinnipiac Street over Quinnipiac River is a prestressed concrete channel beam carrying Quinnipiac Street over Quinnipiac River in New Haven County, Connecticut. It was built in 1938 and reconstructed in 1996, so it is 87 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 12,500 vehicles a day, roughly 3% of them trucks, projected to reach 18,574 by 2039. The structure is 126 ft (38.4 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesQuinnipiac Street
CrossesQuinnipiac River
Location150 Ft E. of Route 15
RouteCity Street 0
Coordinates41.45832, -72.83582
Functional classUrban Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33 US tons
Inventory rating20 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span60 ft (18.3 m)
Deck width49 ft (14.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,500 (2019)
Projected traffic18,574 by 2039
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Quinnipiac Street over Quinnipiac River built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1996.

What condition is Quinnipiac Street 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 March 2023.

How much traffic does Quinnipiac Street over Quinnipiac River carry?

About 12,500 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Quinnipiac Street over Quinnipiac River?

The structure is 126 ft (38.4 m) long with a longest span of 60 ft (18.3 m) and a deck 49 ft wide.

Who owns Quinnipiac Street over Quinnipiac River?

It is owned by the Town or Township Highway Agency.