US Bridges

US Route 1 over Stony Brook

Fair

Fairfield County, Connecticut · 0.4 MI W. of Route 33 · Structure no. 01876

Built
1958
67 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
10,400
2020 count
Owner
State
State Highway Agency

About this bridge

US Route 1 over Stony Brook is a concrete culvert carrying US Route 1 over Stony Brook in Fairfield County, Connecticut. It was built in 1958, so it is 67 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 10,400 vehicles a day, roughly 6% of them trucks, projected to reach 15,453 by 2040. The structure is 23 ft (7 m) long and 67 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS Route 1
CrossesStony Brook
Location0.4 MI W. of Route 33
RouteU.S. Route 1
CountyFairfield County
StateConnecticut
Coordinates41.13653, -73.36986
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating49.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width67 ft (20.4 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,400 (2020)
Projected traffic15,453 by 2040
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 1 over Stony Brook built?

It was built in 1958, making it 67 years old in 2025.

What condition is US Route 1 over Stony Brook 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 October 2023.

How much traffic does US Route 1 over Stony Brook carry?

About 10,400 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is US Route 1 over Stony Brook?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 67 ft wide.

Who owns US Route 1 over Stony Brook?

It is owned by the State Highway Agency.