US Bridges

C3011 over Mill River

Fair

Franklin County, Vermont · 0.1 MI to JCT W CL3 TH9 · Structure no. 100608003006081

Built
1906
119 years old, rebuilt 1990
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
20
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3011 over Mill River is a steel stringer/multi-beam or girder carrying C3011 over Mill River in Franklin County, Vermont. It was built in 1906 and reconstructed in 1990, so it is 119 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 20 vehicles a day, roughly 2% of them trucks, projected to reach 21 by 2029. The structure is 41 ft (12.5 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesC3011
CrossesMill River
Location0.1 MI to JCT W CL3 TH9
StateVermont
Coordinates44.77644, -73.13184
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating44 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic21 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$281,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3011 over Mill River built?

It was built in 1906, making it 119 years old in 2025. It was reconstructed in 1990.

What condition is C3011 over Mill River 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 July 2024.

How much traffic does C3011 over Mill River carry?

About 20 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C3011 over Mill River?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 16 ft wide.

Who owns C3011 over Mill River?

It is owned by the Town or Township Highway Agency.