US Bridges

INTERSTATE-691 WB over Route 15

Fair

New Haven County, Connecticut · 2 MI West of RTE 15 Exit · Structure no. 01827

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
182 ft
2 main spans
Daily traffic
36,100
2024 count
Owner
State
State Highway Agency

About this bridge

INTERSTATE-691 WB over Route 15 is a steel stringer/multi-beam or girder carrying INTERSTATE-691 WB over Route 15 in New Haven County, Connecticut. It was built in 1965, so it is 60 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 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 36,100 vehicles a day, roughly 9% of them trucks, projected to reach 53,641 by 2044. The structure is 182 ft (55.5 m) long and 55 ft wide.

CarriesINTERSTATE-691 WB
CrossesRoute 15
Location2 MI West of RTE 15 Exit
RouteInterstate 691
Coordinates41.54, -72.77057
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating28.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length182 ft (55.5 m)
Longest span97 ft (29.6 m)
Deck width55 ft (16.9 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,100 (2024)
Projected traffic53,641 by 2044
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 INTERSTATE-691 WB over Route 15 built?

It was built in 1965, making it 60 years old in 2025.

What condition is INTERSTATE-691 WB over Route 15 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 August 2024.

How much traffic does INTERSTATE-691 WB over Route 15 carry?

About 36,100 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is INTERSTATE-691 WB over Route 15?

The structure is 182 ft (55.5 m) long with a longest span of 97 ft (29.6 m) and a deck 55 ft wide.

Who owns INTERSTATE-691 WB over Route 15?

It is owned by the State Highway Agency.