US Bridges

Vt 00078 Ml over Missisquoi River

Fair

Franklin County, Vermont · 0.2 MI W Jct. U.S.7 · Structure no. 200036000606152

Built
1966
59 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
302 ft
4 main spans
Daily traffic
10,800
2018 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Vt 00078 Ml over Missisquoi River is a steel continuous stringer/multi-beam or girder carrying Vt 00078 Ml over Missisquoi River in Franklin County, Vermont. It was built in 1966, so it is 59 years old, younger 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 10,800 vehicles a day, roughly 15% of them trucks, projected to reach 11,340 by 2028. The structure is 302 ft (92 m) long and 42 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesVt 00078 Ml
CrossesMissisquoi River
Location0.2 MI W Jct. U.S.7
RouteState Highway 78
StateVermont
Coordinates44.92085, -73.12752
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 rating55 US tons
Inventory rating33 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length302 ft (92 m)
Longest span80 ft (24.4 m)
Deck width42 ft (12.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,800 (2018)
Projected traffic11,340 by 2028
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$4.4 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 00078 Ml over Missisquoi River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Vt 00078 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 August 2023.

How much traffic does Vt 00078 Ml over Missisquoi River carry?

About 10,800 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is Vt 00078 Ml over Missisquoi River?

The structure is 302 ft (92 m) long with a longest span of 80 ft (24.4 m) and a deck 42 ft wide.

Who owns Vt 00078 Ml over Missisquoi River?

It is owned by the Town or Township Highway Agency.