US Bridges

C30BR over Thayer Brook

Fair

Orange County, Vermont · 0.1 MI JCT School ST · Structure no. 100909005409091

Built
1928
97 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
34 ft
1 main span
Daily traffic
150
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C30BR over Thayer Brook is a concrete tee beam carrying C30BR over Thayer Brook in Orange County, Vermont. It was built in 1928, so it is 97 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 5 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 150 vehicles a day, roughly 2% of them trucks, projected to reach 158 by 2029. The structure is 34 ft (10.4 m) long and 23 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesC30BR
CrossesThayer Brook
Location0.1 MI JCT School ST
CountyOrange County
StateVermont
Coordinates43.92499, -72.67649
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2019)
Projected traffic158 by 2029
Trucks2%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$325,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C30BR over Thayer Brook built?

It was built in 1928, making it 97 years old in 2025.

What condition is C30BR over Thayer Brook 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 October 2023.

How much traffic does C30BR over Thayer Brook carry?

About 150 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C30BR over Thayer Brook?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 23 ft wide.

Who owns C30BR over Thayer Brook?

It is owned by the Town or Township Highway Agency.