US Bridges

Vt 00100 Ml over Gihon River

Fair

Lamoille County, Vermont · 0.6 MI N Jct. VT.118 · Structure no. 200029022208032

Built
1929
96 years old, rebuilt 1970
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
39 ft
1 main span
Daily traffic
3,800
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00100 Ml over Gihon River is a concrete tee beam carrying Vt 00100 Ml over Gihon River in Lamoille County, Vermont. It was built in 1929 and reconstructed in 1970, so it is 96 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 3,800 vehicles a day, roughly 9% of them trucks, projected to reach 3,990 by 2028. The structure is 39 ft (11.9 m) long and 33 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesVt 00100 Ml
CrossesGihon River
Location0.6 MI N Jct. VT.118
RouteState Highway 100
StateVermont
Coordinates44.71124, -72.53458
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length39 ft (11.9 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2018)
Projected traffic3,990 by 2028
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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$503,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 00100 Ml over Gihon River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1970.

What condition is Vt 00100 Ml over Gihon River 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 September 2023.

How much traffic does Vt 00100 Ml over Gihon River carry?

About 3,800 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is Vt 00100 Ml over Gihon River?

The structure is 39 ft (11.9 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns Vt 00100 Ml over Gihon River?

It is owned by the State Highway Agency.