US Bridges

Route 12 over French River

Fair

Windham County, Connecticut · 1.5 Miles N of Route 200 · Structure no. 00676

Built
1937
88 years old, rebuilt 1988
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
4,300
2022 count
Owner
State
State Highway Agency

About this bridge

Route 12 over French River is a steel stringer/multi-beam or girder carrying Route 12 over French River in Windham County, Connecticut. It was built in 1937 and reconstructed in 1988, so it is 88 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 5 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 4,300 vehicles a day, roughly 4% of them trucks, projected to reach 6,389 by 2042. The structure is 52 ft (15.9 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 12
CrossesFrench River
Location1.5 Miles N of Route 200
RouteState Highway 12
Coordinates41.98516, -71.89809
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating70 US tons
Inventory rating53.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length52 ft (15.9 m)
Longest span45 ft (13.7 m)
Deck width47 ft (14.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2022)
Projected traffic6,389 by 2042
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

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 12 over French River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1988.

What condition is Route 12 over French 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 August 2024.

How much traffic does Route 12 over French River carry?

About 4,300 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Route 12 over French River?

The structure is 52 ft (15.9 m) long with a longest span of 45 ft (13.7 m) and a deck 47 ft wide.

Who owns Route 12 over French River?

It is owned by the State Highway Agency.