US Bridges

Wolf Creek HWY over Black Creek

Fair

Lenawee County, Michigan · 0.5 MI North of Hunt RD · Structure no. 000000000005597

Built
1983
42 years old
Condition
Fair
inspected May 2023
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
1,749
2011 count
Owner
County
County Highway Agency

About this bridge

Wolf Creek HWY over Black Creek is a wood or timber slab carrying Wolf Creek HWY over Black Creek in Lenawee County, Michigan. It was built in 1983, so it is 42 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 1,749 vehicles a day, roughly 1% of them trucks, projected to reach 5,000 by 2031. The structure is 30 ft (9.1 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesWolf Creek HWY
CrossesBlack Creek
Location0.5 MI North of Hunt RD
RouteCounty Highway 4641
CountyLenawee County
StateMichigan
Coordinates41.936, -84.10416
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating58.3 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,749 (2011)
Projected traffic5,000 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Wolf Creek HWY over Black Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Wolf Creek HWY over Black 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 May 2023.

How much traffic does Wolf Creek HWY over Black Creek carry?

About 1,749 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Wolf Creek HWY over Black Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns Wolf Creek HWY over Black Creek?

It is owned by the County Highway Agency.