US Bridges

TR 0TH18 over TH No 18 over I 89

Fair

Washington County, Vermont · 0.5 MI N Exit 7 · Structure no. 2012030D3912031

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
230 ft
2 main spans
Daily traffic
380
2019 count
Owner
State
State Highway Agency

About this bridge

TR 0TH18 over TH No 18 over I 89 is a steel continuous stringer/multi-beam or girder carrying TR 0TH18 over TH No 18 over I 89 in Washington County, Vermont. It was built in 1970, so it is 55 years old, younger 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 6 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 380 vehicles a day, roughly 2% of them trucks, projected to reach 399 by 2029. The structure is 230 ft (70.1 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesTR 0TH18
CrossesTH No 18 over I 89
Location0.5 MI N Exit 7
RouteCounty Highway 0TH18
CountyWashington County
StateVermont
Coordinates44.22271, -72.58525
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating70 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length230 ft (70.1 m)
Longest span115 ft (35.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic380 (2019)
Projected traffic399 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 0TH18 over TH No 18 over I 89 built?

It was built in 1970, making it 55 years old in 2025.

What condition is TR 0TH18 over TH No 18 over I 89 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 May 2024.

How much traffic does TR 0TH18 over TH No 18 over I 89 carry?

About 380 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is TR 0TH18 over TH No 18 over I 89?

The structure is 230 ft (70.1 m) long with a longest span of 115 ft (35.1 m) and a deck 30 ft wide.

Who owns TR 0TH18 over TH No 18 over I 89?

It is owned by the State Highway Agency.