US Bridges

Vt 00100 Ml over Missisquoi River

Fair

Orleans County, Vermont · 0.5 MI N Jct. VT.101 · Structure no. 200029025210172

Built
1929
96 years old, rebuilt 1977
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
147 ft
3 main spans
Daily traffic
3,100
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00100 Ml over Missisquoi River is a concrete tee beam carrying Vt 00100 Ml over Missisquoi River in Orleans County, Vermont. It was built in 1929 and reconstructed in 1977, so it is 96 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 3,100 vehicles a day, roughly 9% of them trucks, projected to reach 3,255 by 2028. The structure is 147 ft (44.8 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesVt 00100 Ml
CrossesMissisquoi River
Location0.5 MI N Jct. VT.101
RouteState Highway 100
CountyOrleans County
StateVermont
Coordinates44.90555, -72.39689
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length147 ft (44.8 m)
Longest span47 ft (14.3 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2018)
Projected traffic3,255 by 2028
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$1.6 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 00100 Ml over Missisquoi River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1977.

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 3,100 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Vt 00100 Ml over Missisquoi River?

The structure is 147 ft (44.8 m) long with a longest span of 47 ft (14.3 m) and a deck 30 ft wide.

Who owns Vt 00100 Ml over Missisquoi River?

It is owned by the State Highway Agency.