US Bridges

US Route 7 NB over Still River

Fair

Fairfield County, Connecticut · .50 MI N of I-84/ 7 Split · Structure no. 03916

Built
1976
49 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
1 main span
Daily traffic
27,600
2021 count
Owner
State
State Highway Agency

About this bridge

US Route 7 NB over Still River is a steel stringer/multi-beam or girder carrying US Route 7 NB over Still River in Fairfield County, Connecticut. It was built in 1976, so it is 49 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 27,600 vehicles a day, roughly 8% of them trucks, projected to reach 41,011 by 2041. The structure is 150 ft (45.7 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS Route 7 NB
CrossesStill River
Location.50 MI N of I-84/ 7 Split
RouteU.S. Route 7
Coordinates41.42331, -73.41674
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span144 ft (43.9 m)
Deck width46 ft (13.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,600 (2021)
Projected traffic41,011 by 2041
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US Route 7 NB over Still River built?

It was built in 1976, making it 49 years old in 2025.

What condition is US Route 7 NB over Still 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 September 2024.

How much traffic does US Route 7 NB over Still River carry?

About 27,600 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is US Route 7 NB over Still River?

The structure is 150 ft (45.7 m) long with a longest span of 144 ft (43.9 m) and a deck 46 ft wide.

Who owns US Route 7 NB over Still River?

It is owned by the State Highway Agency.