US Bridges

C3046 over Mill Brook

Good

Windsor County, Vermont · 0.03 MI to JCT W VT131 · Structure no. 101420005814201

Built
1960
65 years old
Condition
Good
inspected November 2023
Type
Culvert
Steel
Length
24 ft
1 main span
Daily traffic
200
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3046 over Mill Brook is a steel culvert carrying C3046 over Mill Brook in Windsor County, Vermont. It was built in 1960, so it is 65 years old, older 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 210 by 2029. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 6.8 mi (11 km).

CarriesC3046
CrossesMill Brook
Location0.03 MI to JCT W VT131
StateVermont
Coordinates43.40106, -72.42444
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.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating31 US tons
Inventory rating18 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2019)
Projected traffic210 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$252,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3046 over Mill Brook built?

It was built in 1960, making it 65 years old in 2025.

What condition is C3046 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 November 2023.

How much traffic does C3046 over Mill Brook carry?

About 200 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3046 over Mill Brook?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m).

Who owns C3046 over Mill Brook?

It is owned by the Town or Township Highway Agency.