US Bridges

Vt 0012A Alt over Dog River

Good

Washington County, Vermont · 4.1 MI S Jct. VT.12 N · Structure no. 200187003012132

Built
1993
32 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
1 main span
Daily traffic
1,300
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 0012A Alt over Dog River is a steel stringer/multi-beam or girder carrying Vt 0012A Alt over Dog River in Washington County, Vermont. It was built in 1993, so it is 32 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 1,300 vehicles a day, roughly 6% of them trucks, projected to reach 1,365 by 2028. The structure is 92 ft (28 m) long and 37 ft wide.

CarriesVt 0012A Alt
CrossesDog River
Location4.1 MI S Jct. VT.12 N
RouteState Highway 12A
StateVermont
Coordinates44.11756, -72.71882
Functional classRural Major Collector

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 inspectionJune 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96 US tons
Inventory rating51 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length92 ft (28 m)
Longest span86 ft (26.2 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2018)
Projected traffic1,365 by 2028
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 0012A Alt over Dog River built?

It was built in 1993, making it 32 years old in 2025.

What condition is Vt 0012A Alt over Dog 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 0012A Alt over Dog River carry?

About 1,300 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Vt 0012A Alt over Dog River?

The structure is 92 ft (28 m) long with a longest span of 86 ft (26.2 m) and a deck 37 ft wide.

Who owns Vt 0012A Alt over Dog River?

It is owned by the State Highway Agency.