US Bridges

Vt 00100 Ml over Mad River

Good

Washington County, Vermont · 8.3 MI S Jct. VT.17 · Structure no. 200013016612172

Built
2014
11 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
104 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 steel stringer/multi-beam or girder carrying Vt 00100 Ml over Mad River in Washington County, Vermont. It was built in 2014, so it is 11 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 6% of them trucks, projected to reach 1,260 by 2028. The structure is 104 ft (31.7 m) long and 33 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesVt 00100 Ml
CrossesMad River
Location8.3 MI S Jct. VT.17
RouteState Highway 100
CountyWashington County
StateVermont
Coordinates44.06923, -72.8588
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating67 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length104 ft (31.7 m)
Longest span101 ft (30.8 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2018)
Projected traffic1,260 by 2028
Trucks6%
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 2014, making it 11 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 6% are trucks.

How long is Vt 00100 Ml over Mad River?

The structure is 104 ft (31.7 m) long with a longest span of 101 ft (30.8 m) and a deck 33 ft wide.

Who owns Vt 00100 Ml over Mad River?

It is owned by the State Highway Agency.