US Bridges

C3118 over Williams River

FairPosted for load

Windsor County, Vermont · 0.01 MI to JCT W VT103 · Structure no. 101407005314071

Built
1940
85 years old, rebuilt 2002
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
43 ft
1 main span
Daily traffic
20
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3118 over Williams River is a steel stringer/multi-beam or girder carrying C3118 over Williams River in Windsor County, Vermont. It was built in 1940 and reconstructed in 2002, so it is 85 years old, older 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 2% of them trucks, projected to reach 21 by 2029. The structure is 43 ft (13.1 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesC3118
CrossesWilliams River
Location0.01 MI to JCT W VT103
CountyWindsor County
StateVermont
Coordinates43.2946, -72.6035
Functional classRural 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14 US tons
Inventory rating8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic21 by 2029
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$519,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3118 over Williams River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2002.

What condition is C3118 over Williams 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 October 2023.

How much traffic does C3118 over Williams River carry?

About 20 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3118 over Williams River?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 16 ft wide.

Who owns C3118 over Williams River?

It is owned by the Town or Township Highway Agency.