US Bridges

Mckeown Road over Thornapple River

Fair

Barry County, Michigan · 0.40 Mile N of M-79 · Structure no. 000000000000568

Built
1996
29 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
208 ft
2 main spans
Daily traffic
302
2022 count
Owner
County
County Highway Agency

About this bridge

Mckeown Road over Thornapple River is a prestressed concrete box beam or girders - multiple carrying Mckeown Road over Thornapple River in Barry County, Michigan. It was built in 1996, so it is 29 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 5 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 302 vehicles a day, roughly 2% of them trucks, projected to reach 368 by 2042. The structure is 208 ft (63.5 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMckeown Road
CrossesThornapple River
Location0.40 Mile N of M-79
RouteCounty Highway 0
CountyBarry County
StateMichigan
Coordinates42.61573, -85.23696
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating64.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length208 ft (63.5 m)
Longest span101 ft (30.8 m)
Deck width33 ft (10 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic302 (2022)
Projected traffic368 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mckeown Road over Thornapple River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Mckeown Road 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 July 2023.

How much traffic does Mckeown Road over Thornapple River carry?

About 302 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Mckeown Road over Thornapple River?

The structure is 208 ft (63.5 m) long with a longest span of 101 ft (30.8 m) and a deck 33 ft wide.

Who owns Mckeown Road over Thornapple River?

It is owned by the County Highway Agency.