US Bridges

Route 15 NB over INTERSTATE-91 & TR 3

FairPosted for load

New Haven County, Connecticut · Adj to EXIT#68 to I691 WB · Structure no. 01825

Built
1964
61 years old, rebuilt 1988
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
325 ft
4 main spans
Daily traffic
28,900
2022 count
Owner
State
State Highway Agency

About this bridge

Route 15 NB over INTERSTATE-91 & TR 3 is a steel continuous stringer/multi-beam or girder carrying Route 15 NB over INTERSTATE-91 & TR 3 in New Haven County, Connecticut. It was built in 1964 and reconstructed in 1988, so it is 61 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 other load-capacity restriction.

It carries about 28,900 vehicles a day, roughly 9% of them trucks, projected to reach 42,943 by 2042. The structure is 325 ft (99.1 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRoute 15 NB
CrossesINTERSTATE-91 & TR 3
LocationAdj to EXIT#68 to I691 WB
RouteState Highway 15
CountyNew Haven County
StateConnecticut
Coordinates41.53359, -72.76781
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating57.1 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length325 ft (99.1 m)
Longest span125 ft (38.1 m)
Deck width55 ft (16.9 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,900 (2022)
Projected traffic42,943 by 2042
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 15 NB over INTERSTATE-91 & TR 3 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1988.

What condition is Route 15 NB over INTERSTATE-91 & TR 3 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 2024.

How much traffic does Route 15 NB over INTERSTATE-91 & TR 3 carry?

About 28,900 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Route 15 NB over INTERSTATE-91 & TR 3?

The structure is 325 ft (99.1 m) long with a longest span of 125 ft (38.1 m) and a deck 55 ft wide.

Who owns Route 15 NB over INTERSTATE-91 & TR 3?

It is owned by the State Highway Agency.