US Bridges

County RD 612 over Big Creek

Fair

Crawford County, Michigan · 4.0 N.E. of Lovells · Structure no. 000000000002066

Built
1993
32 years old, rebuilt 2023
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
32 ft
1 main span
Daily traffic
731
2021 count
Owner
County
County Highway Agency

About this bridge

County RD 612 over Big Creek is a wood or timber slab carrying County RD 612 over Big Creek in Crawford County, Michigan. It was built in 1993 and reconstructed in 2023, so it is 32 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 731 vehicles a day, roughly 5% of them trucks, projected to reach 1,360 by 2041. The structure is 32 ft (9.8 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCounty RD 612
CrossesBig Creek
Location4.0 N.E. of Lovells
RouteCounty Highway 612
CountyCrawford County
StateMichigan
Coordinates44.84133, -84.43659
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.4 US tons
Inventory rating70.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadGreater than HL 93
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic731 (2021)
Projected traffic1,360 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 County RD 612 over Big Creek built?

It was built in 1993, making it 32 years old in 2025. It was reconstructed in 2023.

What condition is County RD 612 over Big 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 County RD 612 over Big Creek carry?

About 731 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is County RD 612 over Big Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns County RD 612 over Big Creek?

It is owned by the County Highway Agency.