US Bridges

Johnson Road 500 over Wabasis Creek

Fair

Montcalm County, Michigan · 4.5 Mi. SW Int- M57 & M91 · Structure no. 000000000007450

Built
1962
63 years old, rebuilt 1997
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
943
2005 count
Owner
County
County Highway Agency

About this bridge

Johnson Road 500 over Wabasis Creek is a prestressed concrete tee beam carrying Johnson Road 500 over Wabasis Creek in Montcalm County, Michigan. It was built in 1962 and reconstructed in 1997, so it is 63 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 943 vehicles a day, roughly 1% of them trucks, projected to reach 1,401 by 2025. The structure is 26 ft (8 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesJohnson Road 500
CrossesWabasis Creek
Location4.5 Mi. SW Int- M57 & M91
RouteCounty Highway 0
CountyMontcalm County
StateMichigan
Coordinates43.14694, -85.30303
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating72.5 US tons
Inventory rating43.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length26 ft (8 m)
Longest span23 ft (7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic943 (2005)
Projected traffic1,401 by 2025
Trucks1%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Johnson Road 500 over Wabasis Creek built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1997.

What condition is Johnson Road 500 over Wabasis Creek 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 September 2023.

How much traffic does Johnson Road 500 over Wabasis Creek carry?

About 943 vehicles per day (2005 count), of which roughly 1% are trucks.

How long is Johnson Road 500 over Wabasis Creek?

The structure is 26 ft (8 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns Johnson Road 500 over Wabasis Creek?

It is owned by the County Highway Agency.