US Bridges

C3012 over Missisquoi River

Good

Orleans County, Vermont · 0.1 MI to JCT W CL3 TH4 · Structure no. 101018001710181

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
1 main span
Daily traffic
10
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3012 over Missisquoi River is a steel stringer/multi-beam or girder carrying C3012 over Missisquoi River in Orleans County, Vermont. It was built in 1999, so it is 26 years old, younger than the Vermont average of 60.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 2% of them trucks, projected to reach 11 by 2029. The structure is 105 ft (32 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesC3012
CrossesMissisquoi River
Location0.1 MI to JCT W CL3 TH4
StateVermont
Coordinates44.88618, -72.41094
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating72 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length105 ft (32 m)
Longest span100 ft (30.5 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2019)
Projected traffic11 by 2029
Trucks2%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was C3012 over Missisquoi River built?

It was built in 1999, making it 26 years old in 2025.

What condition is C3012 over Missisquoi River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does C3012 over Missisquoi River carry?

About 10 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3012 over Missisquoi River?

The structure is 105 ft (32 m) long with a longest span of 100 ft (30.5 m) and a deck 25 ft wide.

Who owns C3012 over Missisquoi River?

It is owned by the Town or Township Highway Agency.