US Bridges

Route 136 over Five Mile River

Fair

Fairfield County, Connecticut · Darien-Norwalk Town Line · Structure no. 01345

Built
1935
90 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
9,400
2020 count
Owner
State
State Highway Agency

About this bridge

Route 136 over Five Mile River is a steel stringer/multi-beam or girder carrying Route 136 over Five Mile River in Fairfield County, Connecticut. It was built in 1935, so it is 90 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 9,400 vehicles a day, roughly 6% of them trucks, projected to reach 13,967 by 2040. The structure is 61 ft (18.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 136
CrossesFive Mile River
LocationDarien-Norwalk Town Line
RouteState Highway 136
Coordinates41.07299, -73.44761
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating109.7 US tons
Inventory rating65.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length61 ft (18.6 m)
Longest span56 ft (17.1 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,400 (2020)
Projected traffic13,967 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Route 136 over Five Mile River built?

It was built in 1935, making it 90 years old in 2025.

What condition is Route 136 over Five Mile 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 February 2024.

How much traffic does Route 136 over Five Mile River carry?

About 9,400 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Route 136 over Five Mile River?

The structure is 61 ft (18.6 m) long with a longest span of 56 ft (17.1 m) and a deck 35 ft wide.

Who owns Route 136 over Five Mile River?

It is owned by the State Highway Agency.