US Bridges

I 00091 Ml over I 91 over TH No 4

Fair

Orange County, Vermont · 4.5 MI S I91 Exit 17 · Structure no. 200091064N09072

Built
1973
52 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
98 ft
1 main span
Daily traffic
6,000
2018 count
Owner
State
State Highway Agency

About this bridge

I 00091 Ml over I 91 over TH No 4 is a steel stringer/multi-beam or girder carrying I 00091 Ml over I 91 over TH No 4 in Orange County, Vermont. It was built in 1973, so it is 52 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 6,000 vehicles a day, roughly 13% of them trucks, projected to reach 6,300 by 2028. The structure is 98 ft (29.9 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 00091 Ml
CrossesI 91 over TH No 4
Location4.5 MI S I91 Exit 17
RouteInterstate 91
StateVermont
Coordinates44.09801, -72.10978
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 rating99 US tons
Inventory rating63.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span94 ft (28.7 m)
Deck width41 ft (12.5 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2018)
Projected traffic6,300 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 00091 Ml over I 91 over TH No 4 built?

It was built in 1973, making it 52 years old in 2025.

What condition is I 00091 Ml over I 91 over TH No 4 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 4 carry?

About 6,000 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is I 00091 Ml over I 91 over TH No 4?

The structure is 98 ft (29.9 m) long with a longest span of 94 ft (28.7 m) and a deck 41 ft wide.

Who owns I 00091 Ml over I 91 over TH No 4?

It is owned by the State Highway Agency.