US Bridges

C3012 over Ridley Brook

FairPosted for load

Washington County, Vermont · 0.02 MI to JCT W CL3 TH5 · Structure no. 101206004112061

Built
1921
104 years old, rebuilt 1938
Condition
Fair
inspected August 2024
Type
Girder and Floorbeam System
Steel
Length
67 ft
1 main span
Daily traffic
200
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3012 over Ridley Brook is a steel girder and floorbeam system carrying C3012 over Ridley Brook in Washington County, Vermont. It was built in 1921 and reconstructed in 1938, so it is 104 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 5 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 210 by 2029. The structure is 67 ft (20.4 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesC3012
CrossesRidley Brook
Location0.02 MI to JCT W CL3 TH5
StateVermont
Coordinates44.34145, -72.83349
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating42 US tons
Inventory rating27 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length67 ft (20.4 m)
Longest span63 ft (19.2 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2019)
Projected traffic210 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$474,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3012 over Ridley Brook built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1938.

What condition is C3012 over Ridley Brook 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 C3012 over Ridley Brook carry?

About 200 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3012 over Ridley Brook?

The structure is 67 ft (20.4 m) long with a longest span of 63 ft (19.2 m) and a deck 18 ft wide.

Who owns C3012 over Ridley Brook?

It is owned by the Town or Township Highway Agency.