US Bridges

C3318 over Walloomsac River

Fair

Bennington County, Vermont · 0.03 MI to JCT W CL2 TH7 · Structure no. 100202004502021

Built
1985
40 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
300
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3318 over Walloomsac River is a concrete slab carrying C3318 over Walloomsac River in Bennington County, Vermont. It was built in 1985, so it is 40 years old, younger than the Vermont average of 60.8 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 300 vehicles a day, roughly 2% of them trucks, projected to reach 315 by 2029. The structure is 43 ft (13.1 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesC3318
CrossesWalloomsac River
Location0.03 MI to JCT W CL2 TH7
StateVermont
Coordinates42.88711, -73.20206
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width29 ft (8.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2019)
Projected traffic315 by 2029
Trucks2%
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

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 C3318 over Walloomsac River built?

It was built in 1985, making it 40 years old in 2025.

What condition is C3318 over Walloomsac 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 November 2023.

How much traffic does C3318 over Walloomsac River carry?

About 300 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3318 over Walloomsac River?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 29 ft wide.

Who owns C3318 over Walloomsac River?

It is owned by the Town or Township Highway Agency.