US Bridges

Vt 0100C Alt over Gihon River

Fair

Lamoille County, Vermont · 0.1 MI S Jct. VT.100 · Structure no. 200248000608052

Built
1988
37 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
2,700
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 0100C Alt over Gihon River is a steel stringer/multi-beam or girder carrying Vt 0100C Alt over Gihon River in Lamoille County, Vermont. It was built in 1988, so it is 37 years old, younger 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 2,700 vehicles a day, roughly 6% of them trucks, projected to reach 2,835 by 2028. The structure is 95 ft (29 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesVt 0100C Alt
CrossesGihon River
Location0.1 MI S Jct. VT.100
RouteState Highway 100C
CountyLamoille County
StateVermont
Coordinates44.66646, -72.60513
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length95 ft (29 m)
Longest span90 ft (27.4 m)
Deck width37 ft (11.2 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2018)
Projected traffic2,835 by 2028
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 0100C Alt over Gihon River built?

It was built in 1988, making it 37 years old in 2025.

What condition is Vt 0100C Alt 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 0100C Alt over Gihon River carry?

About 2,700 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Vt 0100C Alt over Gihon River?

The structure is 95 ft (29 m) long with a longest span of 90 ft (27.4 m) and a deck 37 ft wide.

Who owns Vt 0100C Alt over Gihon River?

It is owned by the State Highway Agency.