US Bridges

Route 12 over Canal

Fair

Windham County, Connecticut · 1.5 MI North of Route 200 · Structure no. 00677

Built
1928
97 years old, rebuilt 2010
Condition
Fair
inspected February 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
21 ft
1 main span
Daily traffic
4,000
2016 count
Owner
State
State Highway Agency

About this bridge

Route 12 over Canal is a aluminum, wrought iron, or cast iron culvert carrying Route 12 over Canal in Windham County, Connecticut. It was built in 1928 and reconstructed in 2010, so it is 97 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 4,000 vehicles a day, roughly 5% of them trucks, projected to reach 5,944 by 2036. The structure is 21 ft (6.4 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 12
CrossesCanal
Location1.5 MI North of Route 200
RouteState Highway 12
Coordinates41.9853, -71.89835
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width54 ft (16.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2016)
Projected traffic5,944 by 2036
Trucks5%
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 12 over Canal built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 2010.

What condition is Route 12 over Canal 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 2023.

How much traffic does Route 12 over Canal carry?

About 4,000 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Route 12 over Canal?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 54 ft wide.

Who owns Route 12 over Canal?

It is owned by the State Highway Agency.