US Bridges

C3008 over Mad River

PoorPosted for load

Washington County, Vermont · 0.1 MI to JCT W VT100 · Structure no. 101216002412161

Built
1955
70 years old
Condition
Poor
inspected July 2024
Type
Girder and Floorbeam System
Steel
Length
83 ft
1 main span
Daily traffic
300
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3008 over Mad River is a steel girder and floorbeam system carrying C3008 over Mad River in Washington County, Vermont. It was built in 1955, so it is 70 years old, older than the Vermont average of 60.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 300 vehicles a day, roughly 2% of them trucks, projected to reach 315 by 2029. The structure is 83 ft (25.3 m) long and 13 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesC3008
CrossesMad River
Location0.1 MI to JCT W VT100
StateVermont
Coordinates44.22023, -72.78909
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19 US tons
Inventory rating11 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length83 ft (25.3 m)
Longest span78 ft (23.8 m)
Deck width13 ft (4 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2019)
Projected traffic315 by 2029
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$620,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3008 over Mad River built?

It was built in 1955, making it 70 years old in 2025.

What condition is C3008 over Mad River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does C3008 over Mad River carry?

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

How long is C3008 over Mad River?

The structure is 83 ft (25.3 m) long with a longest span of 78 ft (23.8 m) and a deck 13 ft wide.

Who owns C3008 over Mad River?

It is owned by the Town or Township Highway Agency.