US Bridges

Vt 0100B Alt over Dowsville Brook

Fair

Washington County, Vermont · 0.2 MI N Jct. VT.100 · Structure no. 200167000112122

Built
1927
98 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
81 ft
1 main span
Daily traffic
3,200
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 0100B Alt over Dowsville Brook is a concrete tee beam carrying Vt 0100B Alt over Dowsville Brook in Washington County, Vermont. It was built in 1927, so it is 98 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. Its operating status is: open, temporary structure in place while original is closed.

It carries about 3,200 vehicles a day, roughly 6% of them trucks, projected to reach 3,360 by 2028. The structure is 81 ft (24.7 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesVt 0100B Alt
CrossesDowsville Brook
Location0.2 MI N Jct. VT.100
RouteState Highway 100B
CountyWashington County
StateVermont
Coordinates44.24384, -72.77482
Functional classRural Major Collector

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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating0 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span79 ft (24.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2018)
Projected traffic3,360 by 2028
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$320,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 0100B Alt over Dowsville Brook built?

It was built in 1927, making it 98 years old in 2025.

What condition is Vt 0100B Alt over Dowsville Brook 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 November 2024.

How much traffic does Vt 0100B Alt over Dowsville Brook carry?

About 3,200 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Vt 0100B Alt over Dowsville Brook?

The structure is 81 ft (24.7 m) long with a longest span of 79 ft (24.1 m) and a deck 26 ft wide.

Who owns Vt 0100B Alt over Dowsville Brook?

It is owned by the State Highway Agency.