US Bridges

Vt 0100B Alt over Winooski River

Good

Washington County, Vermont · 0.1 MI S Jct. U.S.2 · Structure no. 200167000812122

Built
2001
24 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
265 ft
2 main spans
Daily traffic
2,900
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 0100B Alt over Winooski River is a steel continuous stringer/multi-beam or girder carrying Vt 0100B Alt over Winooski River in Washington County, Vermont. It was built in 2001, so it is 24 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 2,900 vehicles a day, roughly 5% of them trucks, projected to reach 3,045 by 2028. The structure is 265 ft (80.8 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesVt 0100B Alt
CrossesWinooski River
Location0.1 MI S Jct. U.S.2
RouteState Highway 100B
CountyWashington County
StateVermont
Coordinates44.29109, -72.67934
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 inspectionSeptember 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 alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length265 ft (80.8 m)
Longest span140 ft (42.7 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2018)
Projected traffic3,045 by 2028
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 0100B Alt over Winooski River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Vt 0100B Alt over Winooski 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 September 2023.

How much traffic does Vt 0100B Alt over Winooski River carry?

About 2,900 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Vt 0100B Alt over Winooski River?

The structure is 265 ft (80.8 m) long with a longest span of 140 ft (42.7 m) and a deck 43 ft wide.

Who owns Vt 0100B Alt over Winooski River?

It is owned by the State Highway Agency.