US Bridges

Vt 00030 Ml over Smith Brook

Fair

Windham County, Vermont · 6.0 MI S Jct. VT.35 · Structure no. 200015001113122

Built
1926
99 years old, rebuilt 1986
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
43 ft
1 main span
Daily traffic
5,700
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00030 Ml over Smith Brook is a concrete tee beam carrying Vt 00030 Ml over Smith Brook in Windham County, Vermont. It was built in 1926 and reconstructed in 1986, so it is 99 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 5,700 vehicles a day, roughly 9% of them trucks, projected to reach 5,985 by 2028. The structure is 43 ft (13.1 m) long and 36 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesVt 00030 Ml
CrossesSmith Brook
Location6.0 MI S Jct. VT.35
RouteState Highway 30
StateVermont
Coordinates42.96908, -72.65741
Functional classRural Minor Arterial

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width36 ft (10.9 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,700 (2018)
Projected traffic5,985 by 2028
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 00030 Ml over Smith Brook built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1986.

What condition is Vt 00030 Ml over Smith Brook 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 2023.

How much traffic does Vt 00030 Ml over Smith Brook carry?

About 5,700 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Vt 00030 Ml over Smith Brook?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.

Who owns Vt 00030 Ml over Smith Brook?

It is owned by the State Highway Agency.