US Bridges

50th Ave over Muskegon River

Fair

Osceola County, Michigan · Section 19/20 T18N R7W · Structure no. 000000000008655

Built
1982
43 years old
Condition
Fair
inspected July 2023
Type
Slab
Wood or Timber
Length
242 ft
4 main spans
Daily traffic
175
2017 count
Owner
County
County Highway Agency

About this bridge

50th Ave over Muskegon River is a wood or timber slab carrying 50th Ave over Muskegon River in Osceola County, Michigan. It was built in 1982, so it is 43 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 175 vehicles a day, roughly 5% of them trucks, projected to reach 350 by 2037. The structure is 242 ft (73.7 m) long and 29 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
Carries50th Ave
CrossesMuskegon River
LocationSection 19/20 T18N R7W
RouteCounty Highway 0
CountyOsceola County
StateMichigan
Coordinates43.93434, -85.18841
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadHS 20 + Mod
Structure length242 ft (73.7 m)
Longest span61 ft (18.6 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2017)
Projected traffic350 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was 50th Ave over Muskegon River built?

It was built in 1982, making it 43 years old in 2025.

What condition is 50th Ave over Muskegon 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 50th Ave over Muskegon River carry?

About 175 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is 50th Ave over Muskegon River?

The structure is 242 ft (73.7 m) long with a longest span of 61 ft (18.6 m) and a deck 29 ft wide.

Who owns 50th Ave over Muskegon River?

It is owned by the County Highway Agency.