US Bridges

C3712 over Great Brook

Good

Windsor County, Vermont · 0.02 MI to JCT W CL2 TH6 · Structure no. 101418008214181

Built
1980
45 years old
Condition
Good
inspected October 2023
Type
Culvert
Steel
Length
22 ft
1 main span
Daily traffic
550
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3712 over Great Brook is a steel culvert carrying C3712 over Great Brook in Windsor County, Vermont. It was built in 1980, so it is 45 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 550 vehicles a day, roughly 2% of them trucks, projected to reach 578 by 2029. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesC3712
CrossesGreat Brook
Location0.02 MI to JCT W CL2 TH6
CountyWindsor County
StateVermont
Coordinates43.33442, -72.5361
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2019)
Projected traffic578 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 C3712 over Great Brook built?

It was built in 1980, making it 45 years old in 2025.

What condition is C3712 over Great Brook 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 C3712 over Great Brook carry?

About 550 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3712 over Great Brook?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m).

Who owns C3712 over Great Brook?

It is owned by the Town or Township Highway Agency.