US Bridges

Vt 00129 Ml over Isle Lamotte Passage

Fair

Grand Isle County, Vermont · 3.0 MI W Jct. U.S.2 · Structure no. 200290000107032

Built
1955
70 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
89 ft
1 main span
Daily traffic
1,600
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 00129 Ml over Isle Lamotte Passage is a steel stringer/multi-beam or girder carrying Vt 00129 Ml over Isle Lamotte Passage in Grand Isle County, Vermont. It was built in 1955, so it is 70 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 1,600 vehicles a day, roughly 6% of them trucks, projected to reach 1,680 by 2028. The structure is 89 ft (27.1 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesVt 00129 Ml
CrossesIsle Lamotte Passage
Location3.0 MI W Jct. U.S.2
RouteState Highway 129
StateVermont
Coordinates44.90339, -73.31604
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 rating51 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length89 ft (27.1 m)
Longest span87 ft (26.5 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2018)
Projected traffic1,680 by 2028
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

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$963,000 (2020 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Vt 00129 Ml over Isle Lamotte Passage built?

It was built in 1955, making it 70 years old in 2025.

What condition is Vt 00129 Ml over Isle Lamotte Passage 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 July 2023.

How much traffic does Vt 00129 Ml over Isle Lamotte Passage carry?

About 1,600 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Vt 00129 Ml over Isle Lamotte Passage?

The structure is 89 ft (27.1 m) long with a longest span of 87 ft (26.5 m) and a deck 29 ft wide.

Who owns Vt 00129 Ml over Isle Lamotte Passage?

It is owned by the State Highway Agency.