US Bridges

Gilbert HWY over Wolf Creek

Fair

Lenawee County, Michigan · 0.5 MI North of Teachout · Structure no. 000000000005593

Built
1988
37 years old
Condition
Fair
inspected December 2024
Type
Slab
Wood or Timber
Length
40 ft
2 main spans
Daily traffic
894
2011 count
Owner
County
County Highway Agency

About this bridge

Gilbert HWY over Wolf Creek is a wood or timber slab carrying Gilbert HWY over Wolf Creek in Lenawee County, Michigan. It was built in 1988, so it is 37 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.

It carries about 894 vehicles a day, roughly 2% of them trucks, projected to reach 3,000 by 2031. The structure is 40 ft (12.2 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesGilbert HWY
CrossesWolf Creek
Location0.5 MI North of Teachout
RouteCounty Highway 4674
CountyLenawee County
StateMichigan
Coordinates41.99055, -84.15049
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.2 US tons
Inventory rating53 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span18 ft (5.6 m)
Deck width31 ft (9.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic894 (2011)
Projected traffic3,000 by 2031
Trucks2%
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 Gilbert HWY over Wolf Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Gilbert HWY over Wolf 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 December 2024.

How much traffic does Gilbert HWY over Wolf Creek carry?

About 894 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Gilbert HWY over Wolf Creek?

The structure is 40 ft (12.2 m) long with a longest span of 18 ft (5.6 m) and a deck 31 ft wide.

Who owns Gilbert HWY over Wolf Creek?

It is owned by the County Highway Agency.