US Bridges

Stone Dam Road over Black Branch/Nul. River

Fair

Franklin County, Vermont · Stone Dam Road/Nw 2.9 Mi. · Structure no. 000053591-00004

Built
1960
65 years old, rebuilt 1984
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
20
2023 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

Stone Dam Road over Black Branch/Nul. River is a steel stringer/multi-beam or girder carrying Stone Dam Road over Black Branch/Nul. River in Franklin County, Vermont. It was built in 1960 and reconstructed in 1984, so it is 65 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 20 vehicles a day, projected to reach 50 by 2043. The structure is 73 ft (22.3 m) long and 16 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesStone Dam Road
CrossesBlack Branch/Nul. River
LocationStone Dam Road/Nw 2.9 Mi.
RouteFederal Lands Road 0
CountyFranklin County
StateVermont
Coordinates44.80367, -71.70733
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating21.1 US tons
Inventory rating15 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span69 ft (21 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic20 (2023)
Projected traffic50 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
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 Stone Dam Road over Black Branch/Nul. River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1984.

What condition is Stone Dam Road over Black Branch/Nul. 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 August 2023.

How much traffic does Stone Dam Road over Black Branch/Nul. River carry?

About 20 vehicles per day (2023 count).

How long is Stone Dam Road over Black Branch/Nul. River?

The structure is 73 ft (22.3 m) long with a longest span of 69 ft (21 m) and a deck 16 ft wide.

Who owns Stone Dam Road over Black Branch/Nul. River?

It is owned by the Bureau of Fish and Wildlife.