US Bridges

INTERSTATE-91 SB over SR 715 (montowese Ave)

Fair

New Haven County, Connecticut · I-91 SB over SR 715 · Structure no. 03101

Built
1965
60 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
121 ft
3 main spans
Daily traffic
52,700
2022 count
Owner
State
State Highway Agency

About this bridge

INTERSTATE-91 SB over SR 715 (montowese Ave) is a steel stringer/multi-beam or girder carrying INTERSTATE-91 SB over SR 715 (montowese Ave) 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 52,700 vehicles a day, roughly 9% of them trucks, projected to reach 78,307 by 2042. The structure is 121 ft (36.9 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesINTERSTATE-91 SB
CrossesSR 715 (montowese Ave)
LocationI-91 SB over SR 715
RouteInterstate 91
CountyNew Haven County
StateConnecticut
Coordinates41.35078, -72.86766
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 inspectionSeptember 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 rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length121 ft (36.9 m)
Longest span54 ft (16.5 m)
Deck width77 ft (23.6 m)
Roadway width74 ft (22.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,700 (2022)
Projected traffic78,307 by 2042
Trucks9%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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-91 SB over SR 715 (montowese Ave) built?

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

What condition is INTERSTATE-91 SB over SR 715 (montowese Ave) 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 September 2024.

How much traffic does INTERSTATE-91 SB over SR 715 (montowese Ave) carry?

About 52,700 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is INTERSTATE-91 SB over SR 715 (montowese Ave)?

The structure is 121 ft (36.9 m) long with a longest span of 54 ft (16.5 m) and a deck 77 ft wide.

Who owns INTERSTATE-91 SB over SR 715 (montowese Ave)?

It is owned by the State Highway Agency.