US Bridges

Gilbert HWY over Wolf Creek

Good

Lenawee County, Michigan · North of Reed RD · Structure no. 000000000005594

Built
1998
27 years old
Condition
Good
inspected October 2023
Type
Slab
Wood or Timber
Length
24 ft
1 main span
Daily traffic
1,204
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 1998, so it is 27 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,204 vehicles a day, roughly 2% of them trucks, projected to reach 3,000 by 2031. The structure is 24 ft (7.3 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesGilbert HWY
CrossesWolf Creek
LocationNorth of Reed RD
RouteCounty Highway 4674
CountyLenawee County
StateMichigan
Coordinates41.99869, -84.15071
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.2 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,204 (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 1998, making it 27 years old in 2025.

What condition is Gilbert HWY over Wolf Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Gilbert HWY over Wolf Creek carry?

About 1,204 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Gilbert HWY over Wolf Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 31 ft wide.

Who owns Gilbert HWY over Wolf Creek?

It is owned by the County Highway Agency.