US Bridges

I 00089 Ml over I 89 over TH No 4

Fair

Chittenden County, Vermont · 1.3 MI S Exit 11 · Structure no. 200089055S04112

Built
1964
61 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
162 ft
3 main spans
Daily traffic
28,200
2018 count
Owner
State
State Highway Agency

About this bridge

I 00089 Ml over I 89 over TH No 4 is a steel stringer/multi-beam or girder carrying I 00089 Ml over I 89 over TH No 4 in Chittenden County, Vermont. It was built in 1964, so it is 61 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 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 28,200 vehicles a day, roughly 13% of them trucks, projected to reach 29,610 by 2028. The structure is 162 ft (49.4 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 00089 Ml
CrossesI 89 over TH No 4
Location1.3 MI S Exit 11
RouteInterstate 89
CountyChittenden County
StateVermont
Coordinates44.41175, -72.99146
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.
Superstructure7 GoodSome minor problems.
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span61 ft (18.6 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,200 (2018)
Projected traffic29,610 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$2 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 00089 Ml over I 89 over TH No 4 built?

It was built in 1964, making it 61 years old in 2025.

What condition is I 00089 Ml over I 89 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 00089 Ml over I 89 over TH No 4 carry?

About 28,200 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is I 00089 Ml over I 89 over TH No 4?

The structure is 162 ft (49.4 m) long with a longest span of 61 ft (18.6 m) and a deck 35 ft wide.

Who owns I 00089 Ml over I 89 over TH No 4?

It is owned by the State Highway Agency.