US Bridges

Vt 0002A Alt over Allen Brook

Fair

Chittenden County, Vermont · 0.8 MI No. Jct. U.S.2 · Structure no. 205500000604172

Built
1936
89 years old, rebuilt 1976
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
74 ft
1 main span
Daily traffic
12,800
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 0002A Alt over Allen Brook is a steel stringer/multi-beam or girder carrying Vt 0002A Alt over Allen Brook in Chittenden County, Vermont. It was built in 1936 and reconstructed in 1976, so it is 89 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 5 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 12,800 vehicles a day, roughly 11% of them trucks, projected to reach 13,440 by 2028. The structure is 74 ft (22.6 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesVt 0002A Alt
CrossesAllen Brook
Location0.8 MI No. Jct. U.S.2
RouteState Highway 2A
CountyChittenden County
StateVermont
Coordinates44.46168, -73.11248
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length74 ft (22.6 m)
Longest span72 ft (21.9 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,800 (2018)
Projected traffic13,440 by 2028
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

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$866,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 0002A Alt over Allen Brook built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1976.

What condition is Vt 0002A Alt over Allen 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 May 2023.

How much traffic does Vt 0002A Alt over Allen Brook carry?

About 12,800 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is Vt 0002A Alt over Allen Brook?

The structure is 74 ft (22.6 m) long with a longest span of 72 ft (21.9 m) and a deck 31 ft wide.

Who owns Vt 0002A Alt over Allen Brook?

It is owned by the State Highway Agency.