US Bridges

C3008 over Middlebury River

Good

Addison County, Vermont · 0.85 MI to JCT W CL3 TH7 · Structure no. 100117000701171

Built
1972
53 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
59 ft
1 main span
Daily traffic
100
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3008 over Middlebury River is a steel stringer/multi-beam or girder carrying C3008 over Middlebury River in Addison County, Vermont. It was built in 1972, so it is 53 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 59 ft (18 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesC3008
CrossesMiddlebury River
Location0.85 MI to JCT W CL3 TH7
StateVermont
Coordinates43.95302, -73.13431
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length59 ft (18 m)
Longest span57 ft (17.4 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic105 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 C3008 over Middlebury River built?

It was built in 1972, making it 53 years old in 2025.

What condition is C3008 over Middlebury River 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 2024.

How much traffic does C3008 over Middlebury River carry?

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

How long is C3008 over Middlebury River?

The structure is 59 ft (18 m) long with a longest span of 57 ft (17.4 m) and a deck 25 ft wide.

Who owns C3008 over Middlebury River?

It is owned by the Town or Township Highway Agency.