US Bridges

C3726 over Great Brook

Fair

Windsor County, Vermont · 0.01 MI to JCT W CL2 TH6 · Structure no. 101418004814181

Built
1937
88 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
300
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3726 over Great Brook is a steel stringer/multi-beam or girder carrying C3726 over Great Brook in Windsor County, Vermont. It was built in 1937, so it is 88 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.

It carries about 300 vehicles a day, roughly 2% of them trucks, projected to reach 315 by 2029. The structure is 33 ft (10.1 m) long and 28 ft wide.

Location

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CarriesC3726
CrossesGreat Brook
Location0.01 MI to JCT W CL2 TH6
CountyWindsor County
StateVermont
Coordinates43.33258, -72.52518
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.6 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2019)
Projected traffic315 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$375,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3726 over Great Brook built?

It was built in 1937, making it 88 years old in 2025.

What condition is C3726 over Great Brook 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 October 2023.

How much traffic does C3726 over Great Brook carry?

About 300 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3726 over Great Brook?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns C3726 over Great Brook?

It is owned by the Town or Township Highway Agency.