US Bridges

I-95 NB Ramp 277 over Stony Brook

Good

New London County, Connecticut · I-95 NB Exit No. 91 · Structure no. 01799

Built
1964
61 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
4,900
2020 count
Owner
State
State Highway Agency

About this bridge

I-95 NB Ramp 277 over Stony Brook is a concrete continuous culvert carrying I-95 NB Ramp 277 over Stony Brook in New London County, Connecticut. It was built in 1964, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,900 vehicles a day, roughly 9% of them trucks, projected to reach 7,281 by 2040. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-95 NB Ramp 277
CrossesStony Brook
LocationI-95 NB Exit No. 91
RouteInterstate 95
CountyNew London County
StateConnecticut
Coordinates41.37713, -71.90669
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length31 ft (9.4 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2020)
Projected traffic7,281 by 2040
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-95 NB Ramp 277 over Stony Brook built?

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

What condition is I-95 NB Ramp 277 over Stony Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2021.

How much traffic does I-95 NB Ramp 277 over Stony Brook carry?

About 4,900 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is I-95 NB Ramp 277 over Stony Brook?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.6 m).

Who owns I-95 NB Ramp 277 over Stony Brook?

It is owned by the State Highway Agency.