US Bridges

3 1/2 Mile Road over Wabascon Creek

FairPosted for load

Calhoun County, Michigan · 6 MI N of Springfield · Structure no. 000000000001348

Built
1973
52 years old
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
24 ft
1 main span
Daily traffic
1,248
1994 count
Owner
County
County Highway Agency

About this bridge

3 1/2 Mile Road over Wabascon Creek is a wood or timber slab carrying 3 1/2 Mile Road over Wabascon Creek in Calhoun County, Michigan. It was built in 1973, so it is 52 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 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 1,248 vehicles a day, roughly 5% of them trucks, projected to reach 2,328 by 2024. The structure is 24 ft (7.3 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries3 1/2 Mile Road
CrossesWabascon Creek
Location6 MI N of Springfield
RouteCounty Highway 0
CountyCalhoun County
StateMichigan
Coordinates42.41083, -85.23123
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,248 (1994)
Projected traffic2,328 by 2024
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 3 1/2 Mile Road over Wabascon Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is 3 1/2 Mile Road over Wabascon 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 2024.

How much traffic does 3 1/2 Mile Road over Wabascon Creek carry?

About 1,248 vehicles per day (1994 count), of which roughly 5% are trucks.

How long is 3 1/2 Mile Road over Wabascon Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 28 ft wide.

Who owns 3 1/2 Mile Road over Wabascon Creek?

It is owned by the County Highway Agency.