US Bridges

C30WC over Lamoille River

Fair

Caledonia County, Vermont · @ JCT W CL1 TH1 · Structure no. 100305004303051

Built
1965
60 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
99 ft
1 main span
Daily traffic
750
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C30WC over Lamoille River is a steel stringer/multi-beam or girder carrying C30WC over Lamoille River in Caledonia County, Vermont. It was built in 1965, so it is 60 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 750 vehicles a day, roughly 2% of them trucks, projected to reach 788 by 2029. The structure is 99 ft (30.2 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesC30WC
CrossesLamoille River
Location@ JCT W CL1 TH1
CountyCaledonia County
StateVermont
Coordinates44.50656, -72.36992
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length99 ft (30.2 m)
Longest span97 ft (29.6 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2019)
Projected traffic788 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 C30WC over Lamoille River built?

It was built in 1965, making it 60 years old in 2025.

What condition is C30WC over Lamoille 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 October 2023.

How much traffic does C30WC over Lamoille River carry?

About 750 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C30WC over Lamoille River?

The structure is 99 ft (30.2 m) long with a longest span of 97 ft (29.6 m) and a deck 29 ft wide.

Who owns C30WC over Lamoille River?

It is owned by the Town or Township Highway Agency.