US Bridges

Westbrook Road over Prairie Creek

FairPosted for load

Ionia County, Michigan · 2.5 MI N 1.0 MI W of Muir · Structure no. 000000000004094

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
66 ft
3 main spans
Daily traffic
196
2008 count
Owner
County
County Highway Agency

About this bridge

Westbrook Road over Prairie Creek is a wood or timber slab carrying Westbrook Road over Prairie Creek in Ionia County, Michigan. It was built in 1985, so it is 40 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 196 vehicles a day, roughly 4% of them trucks, projected to reach 228 by 2028. The structure is 66 ft (20.1 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesWestbrook Road
CrossesPrairie Creek
Location2.5 MI N 1.0 MI W of Muir
RouteCounty Highway 0
CountyIonia County
StateMichigan
Coordinates43.04218, -84.97588
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.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating45 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20 + Mod
Structure length66 ft (20.1 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic196 (2008)
Projected traffic228 by 2028
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Westbrook Road over Prairie Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Westbrook Road over Prairie 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 October 2024.

How much traffic does Westbrook Road over Prairie Creek carry?

About 196 vehicles per day (2008 count), of which roughly 4% are trucks.

How long is Westbrook Road over Prairie Creek?

The structure is 66 ft (20.1 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Westbrook Road over Prairie Creek?

It is owned by the County Highway Agency.