US Bridges

C30GR over N. Br. Winooski River

FairPosted for load

Washington County, Vermont · 0.03 MI to JCT W CL1 TH5 · Structure no. 101211001512111

Built
1927
98 years old, rebuilt 2024
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
50
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

C30GR over N. Br. Winooski River is a steel stringer/multi-beam or girder carrying C30GR over N. Br. Winooski River in Washington County, Vermont. It was built in 1927 and reconstructed in 2024, so it is 98 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 53 by 2029. The structure is 69 ft (21 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesC30GR
CrossesN. Br. Winooski River
Location0.03 MI to JCT W CL1 TH5
CountyWashington County
StateVermont
Coordinates44.29687, -72.57904
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length69 ft (21 m)
Longest span66 ft (20.1 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2019)
Projected traffic53 by 2029
Trucks2%
Lanes on structure1
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$603,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C30GR over N. Br. Winooski River built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2024.

What condition is C30GR over N. Br. Winooski 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 February 2025.

How much traffic does C30GR over N. Br. Winooski River carry?

About 50 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C30GR over N. Br. Winooski River?

The structure is 69 ft (21 m) long with a longest span of 66 ft (20.1 m) and a deck 16 ft wide.

Who owns C30GR over N. Br. Winooski River?

It is owned by the City or Municipal Highway Agency.