US Bridges

Charlton Park Road over Thornapple River

Good

Barry County, Michigan · 5 MI SE of Hastings · Structure no. 000000000000558

Built
1956
69 years old, rebuilt 2013
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
135 ft
3 main spans
Daily traffic
670
2012 count
Owner
County
County Highway Agency

About this bridge

Charlton Park Road over Thornapple River is a steel continuous stringer/multi-beam or girder carrying Charlton Park Road over Thornapple River in Barry County, Michigan. It was built in 1956 and reconstructed in 2013, so it is 69 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 670 vehicles a day, projected to reach 996 by 2032. The structure is 135 ft (41.1 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCharlton Park Road
CrossesThornapple River
Location5 MI SE of Hastings
RouteCounty Highway 875
CountyBarry County
StateMichigan
Coordinates42.6165, -85.21165
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.9 US tons
Inventory rating60.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length135 ft (41.1 m)
Longest span45 ft (13.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2012)
Projected traffic996 by 2032
Trucks0%
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

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 Charlton Park Road over Thornapple River built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2013.

What condition is Charlton Park Road over Thornapple River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Charlton Park Road over Thornapple River carry?

About 670 vehicles per day (2012 count).

How long is Charlton Park Road over Thornapple River?

The structure is 135 ft (41.1 m) long with a longest span of 45 ft (13.7 m) and a deck 34 ft wide.

Who owns Charlton Park Road over Thornapple River?

It is owned by the County Highway Agency.