US Bridges

I 00091 Ml over I 91 over TH No 3

Fair

Windham County, Vermont · 1.5 MI N Exit 4 · Structure no. 200091015N13132

Built
1961
64 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
299 ft
5 main spans
Daily traffic
11,800
2018 count
Owner
State
State Highway Agency

About this bridge

I 00091 Ml over I 91 over TH No 3 is a steel stringer/multi-beam or girder carrying I 00091 Ml over I 91 over TH No 3 in Windham County, Vermont. It was built in 1961, so it is 64 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 11,800 vehicles a day, roughly 13% of them trucks, projected to reach 12,390 by 2028. The structure is 299 ft (91.1 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 00091 Ml
CrossesI 91 over TH No 3
Location1.5 MI N Exit 4
RouteInterstate 91
CountyWindham County
StateVermont
Coordinates42.97009, -72.49171
Functional classRural Principal Arterial - Interstate

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length299 ft (91.1 m)
Longest span60 ft (18.3 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,800 (2018)
Projected traffic12,390 by 2028
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$3.7 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 00091 Ml over I 91 over TH No 3 built?

It was built in 1961, making it 64 years old in 2025.

What condition is I 00091 Ml over I 91 over TH No 3 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 I 00091 Ml over I 91 over TH No 3 carry?

About 11,800 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is I 00091 Ml over I 91 over TH No 3?

The structure is 299 ft (91.1 m) long with a longest span of 60 ft (18.3 m) and a deck 35 ft wide.

Who owns I 00091 Ml over I 91 over TH No 3?

It is owned by the State Highway Agency.