US Bridges

Vt 00030 Ml over Smith Brook

Fair

Windham County, Vermont · 5.2 MI S Jct. VT.35 · Structure no. 200015001313122

Built
1945
80 years old, rebuilt 1989
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
69 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 steel stringer/multi-beam or girder carrying Vt 00030 Ml over Smith Brook in Windham County, Vermont. It was built in 1945 and reconstructed in 1989, so it is 80 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 69 ft (21 m) long and 32 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesVt 00030 Ml
CrossesSmith Brook
Location5.2 MI S Jct. VT.35
RouteState Highway 30
CountyWindham County
StateVermont
Coordinates42.98098, -72.65669
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating72 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length69 ft (21 m)
Longest span66 ft (20.1 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$835,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 00030 Ml over Smith Brook built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1989.

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 69 ft (21 m) long with a longest span of 66 ft (20.1 m) and a deck 32 ft wide.

Who owns Vt 00030 Ml over Smith Brook?

It is owned by the State Highway Agency.