US Bridges

I 00089 Ml over Great Brook

Good

Washington County, Vermont · 0.8 MI S Exit 9 · Structure no. 20008944-412102

Built
1960
65 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
25,200
2018 count
Owner
State
State Highway Agency

About this bridge

I 00089 Ml over Great Brook is a concrete culvert carrying I 00089 Ml over Great Brook in Washington County, Vermont. It was built in 1960, so it is 65 years old, older 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 25,200 vehicles a day, roughly 13% of them trucks, projected to reach 26,460 by 2028. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI 00089 Ml
CrossesGreat Brook
Location0.8 MI S Exit 9
RouteInterstate 89
StateVermont
Coordinates44.29197, -72.67074
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length31 ft (9.4 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,200 (2018)
Projected traffic26,460 by 2028
Trucks13%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 00089 Ml over Great Brook built?

It was built in 1960, making it 65 years old in 2025.

What condition is I 00089 Ml over Great Brook 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 I 00089 Ml over Great Brook carry?

About 25,200 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is I 00089 Ml over Great Brook?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.6 m).

Who owns I 00089 Ml over Great Brook?

It is owned by the State Highway Agency.