US Bridges

C3006 over Black Falls Brook

Good

Franklin County, Vermont · At JCT With C3 TH7 · Structure no. 100610003506101

Built
1970
55 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
1 main span
Daily traffic
100
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3006 over Black Falls Brook is a steel stringer/multi-beam or girder carrying C3006 over Black Falls Brook in Franklin County, Vermont. It was built in 1970, so it is 55 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 68 ft (20.7 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesC3006
CrossesBlack Falls Brook
LocationAt JCT With C3 TH7
CountyFranklin County
StateVermont
Coordinates44.90749, -72.63393
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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.1 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length68 ft (20.7 m)
Longest span65 ft (19.8 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic105 by 2029
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$440,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3006 over Black Falls Brook built?

It was built in 1970, making it 55 years old in 2025.

What condition is C3006 over Black Falls 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 July 2024.

How much traffic does C3006 over Black Falls Brook carry?

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

How long is C3006 over Black Falls Brook?

The structure is 68 ft (20.7 m) long with a longest span of 65 ft (19.8 m) and a deck 16 ft wide.

Who owns C3006 over Black Falls Brook?

It is owned by the Town or Township Highway Agency.