US Bridges

C3027 over Potash Brook

Good

Addison County, Vermont · 0.5 MI to JCT W CL3 TH28 · Structure no. 100102002401021

Built
1919
106 years old, rebuilt 2022
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
200
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C3027 over Potash Brook is a prestressed concrete slab carrying C3027 over Potash Brook in Addison County, Vermont. It was built in 1919 and reconstructed in 2022, so it is 106 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 34 ft (10.4 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesC3027
CrossesPotash Brook
Location0.5 MI to JCT W CL3 TH28
StateVermont
Coordinates43.98221, -73.32777
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum 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 alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.6 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 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$518,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C3027 over Potash Brook built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 2022.

What condition is C3027 over Potash 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 2024.

How much traffic does C3027 over Potash Brook carry?

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

How long is C3027 over Potash Brook?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns C3027 over Potash Brook?

It is owned by the Town or Township Highway Agency.