US Bridges

C3011 over Twenty Mile Stream

Good

Windsor County, Vermont · 0.28 MI to JCT W CL2 TH3 · Structure no. 101406004614061

Built
1968
57 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
100
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3011 over Twenty Mile Stream is a concrete slab carrying C3011 over Twenty Mile Stream in Windsor County, Vermont. It was built in 1968, so it is 57 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 105 by 2029. The structure is 27 ft (8.2 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesC3011
CrossesTwenty Mile Stream
Location0.28 MI to JCT W CL2 TH3
StateVermont
Coordinates43.40588, -72.63617
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic105 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 C3011 over Twenty Mile Stream built?

It was built in 1968, making it 57 years old in 2025.

What condition is C3011 over Twenty Mile Stream 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 October 2023.

How much traffic does C3011 over Twenty Mile Stream carry?

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

How long is C3011 over Twenty Mile Stream?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 25 ft wide.

Who owns C3011 over Twenty Mile Stream?

It is owned by the Town or Township Highway Agency.