US Bridges

C3020 over N. Br. of Lamoille River

FairPosted for load

Lamoille County, Vermont · 0.1 MI to JCT VT109 · Structure no. 100809001408091

Built
1877
148 years old, rebuilt 1968
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
100
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3020 over N. Br. of Lamoille River is a steel stringer/multi-beam or girder carrying C3020 over N. Br. of Lamoille River in Lamoille County, Vermont. It was built in 1877 and reconstructed in 1968, so it is 148 years old, older 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 2% of them trucks, projected to reach 105 by 2029. The structure is 61 ft (18.6 m) long and 12 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesC3020
CrossesN. Br. of Lamoille River
Location0.1 MI to JCT VT109
CountyLamoille County
StateVermont
Coordinates44.6901, -72.77097
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length61 ft (18.6 m)
Longest span47 ft (14.3 m)
Deck width12 ft (3.6 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deck8 ft (2.5 m)

Traffic and service

Average daily traffic100 (2019)
Projected traffic105 by 2029
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$488,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3020 over N. Br. of Lamoille River built?

It was built in 1877, making it 148 years old in 2025. It was reconstructed in 1968.

What condition is C3020 over N. Br. of 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 July 2024.

How much traffic does C3020 over N. Br. of Lamoille River carry?

About 100 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3020 over N. Br. of Lamoille River?

The structure is 61 ft (18.6 m) long with a longest span of 47 ft (14.3 m) and a deck 12 ft wide.

Who owns C3020 over N. Br. of Lamoille River?

It is owned by the Town or Township Highway Agency.