US Bridges

C3004 over Missisquoi River

Good

Orleans County, Vermont · 0.1 MI to JCT W CL3 TH20 · Structure no. 101018001610181

Built
1973
52 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
120
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3004 over Missisquoi River is a steel stringer/multi-beam or girder carrying C3004 over Missisquoi River in Orleans County, Vermont. It was built in 1973, so it is 52 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 120 vehicles a day, roughly 2% of them trucks, projected to reach 126 by 2029. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesC3004
CrossesMissisquoi River
Location0.1 MI to JCT W CL3 TH20
StateVermont
Coordinates44.86674, -72.41544
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
Deck7 GoodSome minor problems.
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, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67 US tons
Inventory rating38 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length70 ft (21.3 m)
Longest span67 ft (20.4 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2019)
Projected traffic126 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 C3004 over Missisquoi River built?

It was built in 1973, making it 52 years old in 2025.

What condition is C3004 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 C3004 over Missisquoi River carry?

About 120 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3004 over Missisquoi River?

The structure is 70 ft (21.3 m) long with a longest span of 67 ft (20.4 m) and a deck 24 ft wide.

Who owns C3004 over Missisquoi River?

It is owned by the Town or Township Highway Agency.