US Bridges

C3012 over Missisquoi River

Good

Orleans County, Vermont · 0.06 MI to JCT W C3 TH22 · Structure no. 101017000810171

Built
1910
115 years old, rebuilt 2007
Condition
Good
inspected August 2023
Type
Truss - Thru
Steel
Length
95 ft
1 main span
Daily traffic
70
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3012 over Missisquoi River is a steel truss - thru carrying C3012 over Missisquoi River in Orleans County, Vermont. It was built in 1910 and reconstructed in 2007, so it is 115 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: open, temporary structure in place while original is closed.

It carries about 70 vehicles a day, roughly 4% of them trucks, projected to reach 74 by 2029. The structure is 95 ft (29 m) long and 11 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesC3012
CrossesMissisquoi River
Location0.06 MI to JCT W C3 TH22
CountyOrleans County
StateVermont
Coordinates44.95633, -72.3935
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length95 ft (29 m)
Longest span91 ft (27.7 m)
Deck width11 ft (3.5 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deck9 ft (2.8 m)

Traffic and service

Average daily traffic70 (2019)
Projected traffic74 by 2029
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$593,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3012 over Missisquoi River built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 2007.

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 70 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is C3012 over Missisquoi River?

The structure is 95 ft (29 m) long with a longest span of 91 ft (27.7 m) and a deck 11 ft wide.

Who owns C3012 over Missisquoi River?

It is owned by the Town or Township Highway Agency.