US Bridges

M-20 over White River

Fair

Oceana County, Michigan · 0.8 MI W of Newaygo Col · Structure no. 000000000008363

Built
1963
62 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
2 main spans
Daily traffic
3,067
2007 count
Owner
State
State Highway Agency

About this bridge

M-20 over White River is a prestressed concrete stringer/multi-beam or girder carrying M-20 over White River in Oceana County, Michigan. It was built in 1963, so it is 62 years old, older 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 3,067 vehicles a day, roughly 7% of them trucks, projected to reach 4,044 by 2018. The structure is 90 ft (27.4 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesM-20
CrossesWhite River
Location0.8 MI W of Newaygo Col
RouteState Highway 20
CountyOceana County
StateMichigan
Coordinates43.56774, -86.05343
Functional classRural Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.2 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span45 ft (13.7 m)
Deck width47 ft (14.4 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,067 (2007)
Projected traffic4,044 by 2018
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-20 over White River built?

It was built in 1963, making it 62 years old in 2025.

What condition is M-20 over White 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 2024.

How much traffic does M-20 over White River carry?

About 3,067 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is M-20 over White River?

The structure is 90 ft (27.4 m) long with a longest span of 45 ft (13.7 m) and a deck 47 ft wide.

Who owns M-20 over White River?

It is owned by the State Highway Agency.