US Bridges

Bay Road over Laplatte River

FairPosted for load

Chittenden County, Vermont · 1.0 MI to JCT W US7 · Structure no. 205704000704132

Built
1948
77 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
89 ft
1 main span
Daily traffic
3,000
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bay Road over Laplatte River is a steel stringer/multi-beam or girder carrying Bay Road over Laplatte River in Chittenden County, Vermont. It was built in 1948, so it is 77 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 3,000 vehicles a day, roughly 3% of them trucks, projected to reach 3,150 by 2026. The structure is 89 ft (27.1 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesBay Road
CrossesLaplatte River
Location1.0 MI to JCT W US7
RouteCity Street BAYRD
CountyChittenden County
StateVermont
Coordinates44.39851, -73.23441
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length89 ft (27.1 m)
Longest span86 ft (26.2 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2016)
Projected traffic3,150 by 2026
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bay Road over Laplatte River built?

It was built in 1948, making it 77 years old in 2025.

What condition is Bay Road over Laplatte 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 July 2024.

How much traffic does Bay Road over Laplatte River carry?

About 3,000 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is Bay Road over Laplatte River?

The structure is 89 ft (27.1 m) long with a longest span of 86 ft (26.2 m) and a deck 28 ft wide.

Who owns Bay Road over Laplatte River?

It is owned by the City or Municipal Highway Agency.