US Bridges

C3009 over Mill Brook

Good

Orleans County, Vermont · 0.50 MI West of JCT TH1 · Structure no. 101018001410181

Built
1998
27 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
36 ft
1 main span
Daily traffic
90
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3009 over Mill Brook is a concrete slab carrying C3009 over Mill Brook in Orleans County, Vermont. It was built in 1998, so it is 27 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 90 vehicles a day, roughly 1% of them trucks, projected to reach 95 by 2029. The structure is 36 ft (11 m) long and 23 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesC3009
CrossesMill Brook
Location0.50 MI West of JCT TH1
StateVermont
Coordinates44.89063, -72.43271
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2019)
Projected traffic95 by 2029
Trucks1%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was C3009 over Mill Brook built?

It was built in 1998, making it 27 years old in 2025.

What condition is C3009 over Mill 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 August 2023.

How much traffic does C3009 over Mill Brook carry?

About 90 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is C3009 over Mill Brook?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 23 ft wide.

Who owns C3009 over Mill Brook?

It is owned by the Town or Township Highway Agency.