US Bridges

Vt 00100 Ml over Black River

Good

Windsor County, Vermont · 0.5 MI N Jct. VT.100A · Structure no. 200013011014122

Built
1961
64 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
1 main span
Daily traffic
1,100
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00100 Ml over Black River is a steel stringer/multi-beam or girder carrying Vt 00100 Ml over Black River in Windsor County, Vermont. It was built in 1961, so it is 64 years old, older 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 1,100 vehicles a day, roughly 9% of them trucks, projected to reach 1,155 by 2028. The structure is 84 ft (25.6 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesVt 00100 Ml
CrossesBlack River
Location0.5 MI N Jct. VT.100A
RouteState Highway 100
StateVermont
Coordinates43.53494, -72.74239
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating58 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length84 ft (25.6 m)
Longest span82 ft (25 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2018)
Projected traffic1,155 by 2028
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Black River built?

It was built in 1961, making it 64 years old in 2025.

What condition is Vt 00100 Ml over Black 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 June 2023.

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

About 1,100 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Vt 00100 Ml over Black River?

The structure is 84 ft (25.6 m) long with a longest span of 82 ft (25 m) and a deck 34 ft wide.

Who owns Vt 00100 Ml over Black River?

It is owned by the State Highway Agency.