US Bridges

Middlesex Road over Stony Brook

Fair

Fairfield County, Connecticut · 1.5 MI E of Route 106 · Structure no. 04143

Built
1950
75 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
6,870
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Middlesex Road over Stony Brook is a concrete slab carrying Middlesex Road over Stony Brook in Fairfield County, Connecticut. It was built in 1950, so it is 75 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 6,870 vehicles a day, roughly 4% of them trucks, projected to reach 10,208 by 2043. The structure is 28 ft (8.5 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMiddlesex Road
CrossesStony Brook
Location1.5 MI E of Route 106
RouteCity Street 0
CountyFairfield County
StateConnecticut
Coordinates41.08209, -73.48557
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width39 ft (11.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,870 (2023)
Projected traffic10,208 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Middlesex Road over Stony Brook built?

It was built in 1950, making it 75 years old in 2025.

What condition is Middlesex Road 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 December 2023.

How much traffic does Middlesex Road over Stony Brook carry?

About 6,870 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Middlesex Road over Stony Brook?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 39 ft wide.

Who owns Middlesex Road over Stony Brook?

It is owned by the Town or Township Highway Agency.