US Bridges

4 Mile Road over Nottawa Creek

Fair

Calhoun County, Michigan · 1 MI E of Athens · Structure no. 000000000001345

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
54 ft
3 main spans
Daily traffic
111
1994 count
Owner
County
County Highway Agency

About this bridge

4 Mile Road over Nottawa Creek is a wood or timber slab carrying 4 Mile Road over Nottawa Creek in Calhoun County, Michigan. It was built in 1972, so it is 53 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 111 vehicles a day, roughly 5% of them trucks, projected to reach 207 by 2024. The structure is 54 ft (16.4 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries4 Mile Road
CrossesNottawa Creek
Location1 MI E of Athens
RouteCounty Highway 0
CountyCalhoun County
StateMichigan
Coordinates42.09516, -85.21612
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.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20 + Mod
Structure length54 ft (16.4 m)
Longest span18 ft (5.4 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111 (1994)
Projected traffic207 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 4 Mile Road over Nottawa Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is 4 Mile Road over Nottawa 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 4 Mile Road over Nottawa Creek carry?

About 111 vehicles per day (1994 count), of which roughly 5% are trucks.

How long is 4 Mile Road over Nottawa Creek?

The structure is 54 ft (16.4 m) long with a longest span of 18 ft (5.4 m) and a deck 30 ft wide.

Who owns 4 Mile Road over Nottawa Creek?

It is owned by the County Highway Agency.