US Bridges

C3715 over Whetstone Brook

Fair

Windham County, Vermont · 0.06 MI to JCT W CL1 TH2 · Structure no. 101302005813021

Built
1966
59 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
300
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3715 over Whetstone Brook is a steel stringer/multi-beam or girder carrying C3715 over Whetstone Brook in Windham County, Vermont. It was built in 1966, so it is 59 years old, younger 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 60 ft (18.3 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesC3715
CrossesWhetstone Brook
Location0.06 MI to JCT W CL1 TH2
CountyWindham County
StateVermont
Coordinates42.85317, -72.59807
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length60 ft (18.3 m)
Longest span57 ft (17.4 m)
Deck width37 ft (11.2 m)
Roadway width24 ft (7.3 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 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 C3715 over Whetstone Brook built?

It was built in 1966, making it 59 years old in 2025.

What condition is C3715 over Whetstone 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 September 2024.

How much traffic does C3715 over Whetstone Brook carry?

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

How long is C3715 over Whetstone Brook?

The structure is 60 ft (18.3 m) long with a longest span of 57 ft (17.4 m) and a deck 37 ft wide.

Who owns C3715 over Whetstone Brook?

It is owned by the Town or Township Highway Agency.