US Bridges

Vt 00100 Ml over Black River

Fair

Windsor County, Vermont · 0.8 MI N Jct. VT.100A · Structure no. 200013011114122

Built
1961
64 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
30 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 concrete slab 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,100 vehicles a day, roughly 9% of them trucks, projected to reach 1,155 by 2028. The structure is 30 ft (9.1 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesVt 00100 Ml
CrossesBlack River
Location0.8 MI N Jct. VT.100A
RouteState Highway 100
StateVermont
Coordinates43.53829, -72.74536
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating45 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 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 fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. 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 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 33 ft wide.

Who owns Vt 00100 Ml over Black River?

It is owned by the State Highway Agency.