US Bridges

Vt 00100 Ml over Mad River

Good

Washington County, Vermont · 9.0 MI S Jct. VT.17 · Structure no. 200013016512172

Built
2012
13 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
35 ft
1 main span
Daily traffic
1,200
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00100 Ml over Mad River is a concrete culvert carrying Vt 00100 Ml over Mad River in Washington County, Vermont. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,200 vehicles a day, roughly 9% of them trucks, projected to reach 1,260 by 2028. The structure is 35 ft (10.7 m) long and 37 ft wide. If it were closed, the detour would be 28 mi (45 km).

CarriesVt 00100 Ml
CrossesMad River
Location9.0 MI S Jct. VT.17
RouteState Highway 100
StateVermont
Coordinates44.06138, -72.85199
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length35 ft (10.7 m)
Longest span32 ft (9.8 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2018)
Projected traffic1,260 by 2028
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Vt 00100 Ml over Mad River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Vt 00100 Ml 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 September 2023.

How much traffic does Vt 00100 Ml over Mad River carry?

About 1,200 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Vt 00100 Ml over Mad River?

The structure is 35 ft (10.7 m) long with a longest span of 32 ft (9.8 m) and a deck 37 ft wide.

Who owns Vt 00100 Ml over Mad River?

It is owned by the State Highway Agency.