US Bridges

Vt 00011 Ml over Andover Branch

Fair

Windsor County, Vermont · 3.6 MI W Jct. VT.103 N · Structure no. 200016004414072

Built
1933
92 years old, rebuilt 1974
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
58 ft
1 main span
Daily traffic
4,000
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00011 Ml over Andover Branch is a concrete tee beam carrying Vt 00011 Ml over Andover Branch in Windsor County, Vermont. It was built in 1933 and reconstructed in 1974, so it is 92 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 4,000 vehicles a day, roughly 9% of them trucks, projected to reach 4,200 by 2028. The structure is 58 ft (17.7 m) long and 32 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesVt 00011 Ml
CrossesAndover Branch
Location3.6 MI W Jct. VT.103 N
RouteState Highway 11
StateVermont
Coordinates43.26187, -72.65863
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length58 ft (17.7 m)
Longest span56 ft (17.1 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2018)
Projected traffic4,200 by 2028
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$706,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 00011 Ml over Andover Branch built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1974.

What condition is Vt 00011 Ml over Andover Branch 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 June 2023.

How much traffic does Vt 00011 Ml over Andover Branch carry?

About 4,000 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Vt 00011 Ml over Andover Branch?

The structure is 58 ft (17.7 m) long with a longest span of 56 ft (17.1 m) and a deck 32 ft wide.

Who owns Vt 00011 Ml over Andover Branch?

It is owned by the State Highway Agency.