US Bridges

Vt 00100 Ml over Missisquoi River

Fair

Orleans County, Vermont · 2.7 MI N Jct. VT.58 · Structure no. 200029024110182

Built
1956
69 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
99 ft
1 main span
Daily traffic
1,700
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00100 Ml over Missisquoi River is a steel stringer/multi-beam or girder carrying Vt 00100 Ml over Missisquoi River in Orleans County, Vermont. It was built in 1956, so it is 69 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 1,700 vehicles a day, roughly 9% of them trucks, projected to reach 1,785 by 2028. The structure is 99 ft (30.2 m) long and 33 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesVt 00100 Ml
CrossesMissisquoi River
Location2.7 MI N Jct. VT.58
RouteState Highway 100
StateVermont
Coordinates44.83663, -72.43366
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating56 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length99 ft (30.2 m)
Longest span97 ft (29.6 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2018)
Projected traffic1,785 by 2028
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 00100 Ml over Missisquoi River built?

It was built in 1956, making it 69 years old in 2025.

What condition is Vt 00100 Ml over Missisquoi River 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 00100 Ml over Missisquoi River carry?

About 1,700 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Vt 00100 Ml over Missisquoi River?

The structure is 99 ft (30.2 m) long with a longest span of 97 ft (29.6 m) and a deck 33 ft wide.

Who owns Vt 00100 Ml over Missisquoi River?

It is owned by the State Highway Agency.