US Bridges

US Route 5 over Quinnipiac River

Fair

New Haven County, Connecticut · .2 MI S of INTERSTATE-91 · Structure no. 02648

Built
1973
52 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
227 ft
3 main spans
Daily traffic
18,600
2021 count
Owner
State
State Highway Agency

About this bridge

US Route 5 over Quinnipiac River is a steel stringer/multi-beam or girder carrying US Route 5 over Quinnipiac River in New Haven County, Connecticut. It was built in 1973, so it is 52 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 18,600 vehicles a day, roughly 5% of them trucks, projected to reach 27,638 by 2041. The structure is 227 ft (69.2 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS Route 5
CrossesQuinnipiac River
Location.2 MI S of INTERSTATE-91
RouteU.S. Route 5
Coordinates41.39234, -72.86841
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
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating50 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length227 ft (69.2 m)
Longest span73 ft (22.3 m)
Deck width66 ft (20.1 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,600 (2021)
Projected traffic27,638 by 2041
Trucks5%
Lanes on structure4
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

OwnerState Highway Agency
Maintained byState 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 US Route 5 over Quinnipiac River built?

It was built in 1973, making it 52 years old in 2025.

What condition is US Route 5 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 December 2024.

How much traffic does US Route 5 over Quinnipiac River carry?

About 18,600 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is US Route 5 over Quinnipiac River?

The structure is 227 ft (69.2 m) long with a longest span of 73 ft (22.3 m) and a deck 66 ft wide.

Who owns US Route 5 over Quinnipiac River?

It is owned by the State Highway Agency.