US Bridges

C3029 over Mad River

Good

Washington County, Vermont · 0.1 MI to JCT W VT100 · Structure no. 101216002212161

Built
1999
26 years old
Condition
Good
inspected July 2024
Type
Truss - Thru
Steel
Length
62 ft
1 main span
Daily traffic
180
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3029 over Mad River is a steel truss - thru carrying C3029 over Mad River in Washington County, Vermont. It was built in 1999, so it is 26 years old, younger than the Vermont average of 60.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 180 vehicles a day, roughly 2% of them trucks, projected to reach 189 by 2029. The structure is 62 ft (18.9 m) long and 15 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesC3029
CrossesMad River
Location0.1 MI to JCT W VT100
StateVermont
Coordinates44.15139, -72.83987
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating63.1 US tons
Inventory rating47 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length62 ft (18.9 m)
Longest span57 ft (17.4 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2019)
Projected traffic189 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$380,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3029 over Mad River built?

It was built in 1999, making it 26 years old in 2025.

What condition is C3029 over Mad River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does C3029 over Mad River carry?

About 180 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3029 over Mad River?

The structure is 62 ft (18.9 m) long with a longest span of 57 ft (17.4 m) and a deck 15 ft wide.

Who owns C3029 over Mad River?

It is owned by the Town or Township Highway Agency.