US Bridges

C30HA over N. Br. Winooski River

GoodPosted for load

Washington County, Vermont · 0.01 MI to JCT W CL1 TH5 · Structure no. 101211001612111

Built
1984
41 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
20
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

C30HA over N. Br. Winooski River is a steel stringer/multi-beam or girder carrying C30HA over N. Br. Winooski River in Washington County, Vermont. It was built in 1984, so it is 41 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 2% of them trucks, projected to reach 21 by 2029. The structure is 72 ft (21.9 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesC30HA
CrossesN. Br. Winooski River
Location0.01 MI to JCT W CL1 TH5
CountyWashington County
StateVermont
Coordinates44.30305, -72.57882
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length72 ft (21.9 m)
Longest span69 ft (21 m)
Deck width18 ft (5.4 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic21 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$496,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C30HA over N. Br. Winooski River built?

It was built in 1984, making it 41 years old in 2025.

What condition is C30HA over N. Br. Winooski 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 September 2023.

How much traffic does C30HA over N. Br. Winooski River carry?

About 20 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C30HA over N. Br. Winooski River?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 18 ft wide.

Who owns C30HA over N. Br. Winooski River?

It is owned by the City or Municipal Highway Agency.