US Bridges

TR 0TH12 over TH No 12 over I 91

Good

Caledonia County, Vermont · 3.7 MI N Exit 18 · Structure no. 2003010D7903011

Built
1978
47 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
244 ft
2 main spans
Daily traffic
100
2019 count
Owner
State
State Highway Agency

About this bridge

TR 0TH12 over TH No 12 over I 91 is a steel continuous stringer/multi-beam or girder carrying TR 0TH12 over TH No 12 over I 91 in Caledonia County, Vermont. It was built in 1978, so it is 47 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 244 ft (74.4 m) long and 27 ft wide.

CarriesTR 0TH12
CrossesTH No 12 over I 91
Location3.7 MI N Exit 18
RouteCounty Highway 0TH12
StateVermont
Coordinates44.34088, -72.03207
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.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating41 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length244 ft (74.4 m)
Longest span120 ft (36.6 m)
Deck width27 ft (8.1 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
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR 0TH12 over TH No 12 over I 91 built?

It was built in 1978, making it 47 years old in 2025.

What condition is TR 0TH12 over TH No 12 over I 91 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 May 2024.

How much traffic does TR 0TH12 over TH No 12 over I 91 carry?

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

How long is TR 0TH12 over TH No 12 over I 91?

The structure is 244 ft (74.4 m) long with a longest span of 120 ft (36.6 m) and a deck 27 ft wide.

Who owns TR 0TH12 over TH No 12 over I 91?

It is owned by the State Highway Agency.