US Bridges

Vermontville HWY over Thornapple River

Fair

Eaton County, Michigan · 3 Miles E of Vermontville · Structure no. 000000000002344

Built
1995
30 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
2,156
2021 count
Owner
County
County Highway Agency

About this bridge

Vermontville HWY over Thornapple River is a prestressed concrete box beam or girders - multiple carrying Vermontville HWY over Thornapple River in Eaton County, Michigan. It was built in 1995, so it is 30 years old, younger than the Michigan average of 48.3 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 2,156 vehicles a day, roughly 5% of them trucks, projected to reach 2,382 by 2041. The structure is 110 ft (33.5 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesVermontville HWY
CrossesThornapple River
Location3 Miles E of Vermontville
RouteCounty Highway 2360
CountyEaton County
StateMichigan
Coordinates42.62622, -84.96286
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating81 US tons
Inventory rating46.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length110 ft (33.5 m)
Longest span110 ft (33.5 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,156 (2021)
Projected traffic2,382 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Vermontville HWY over Thornapple River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Vermontville HWY over Thornapple 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 April 2023.

How much traffic does Vermontville HWY over Thornapple River carry?

About 2,156 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Vermontville HWY over Thornapple River?

The structure is 110 ft (33.5 m) long with a longest span of 110 ft (33.5 m) and a deck 44 ft wide.

Who owns Vermontville HWY over Thornapple River?

It is owned by the County Highway Agency.