US Bridges

TR 01 FAS 171 over Mill Brook

Good

Bennington County, Vermont · 0.6 MI JCT TH2 & TH1 · Structure no. 200171000202152

Built
1948
77 years old, rebuilt 1998
Condition
Good
inspected June 2024
Type
Slab
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
830
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 01 FAS 171 over Mill Brook is a prestressed concrete slab carrying TR 01 FAS 171 over Mill Brook in Bennington County, Vermont. It was built in 1948 and reconstructed in 1998, so it is 77 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 830 vehicles a day, roughly 3% of them trucks, projected to reach 872 by 2027. The structure is 43 ft (13.1 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesTR 01 FAS 171
CrossesMill Brook
Location0.6 MI JCT TH2 & TH1
RouteCounty Highway 1
StateVermont
Coordinates43.11264, -73.10647
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating99 US tons
Inventory rating64 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic830 (2017)
Projected traffic872 by 2027
Trucks3%
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 TR 01 FAS 171 over Mill Brook built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1998.

What condition is TR 01 FAS 171 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 June 2024.

How much traffic does TR 01 FAS 171 over Mill Brook carry?

About 830 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is TR 01 FAS 171 over Mill Brook?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 29 ft wide.

Who owns TR 01 FAS 171 over Mill Brook?

It is owned by the Town or Township Highway Agency.