US Bridges

M-50 over Wilson Creek

Good

Lenawee County, Michigan · 1.0 MI W of M-52 · Structure no. 000000000005534

Built
1997
28 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
7,076
2007 count
Owner
State
State Highway Agency

About this bridge

M-50 over Wilson Creek is a concrete culvert carrying M-50 over Wilson Creek in Lenawee County, Michigan. It was built in 1997, so it is 28 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,076 vehicles a day, roughly 7% of them trucks, projected to reach 9,272 by 2018. The structure is 26 ft (7.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesM-50
CrossesWilson Creek
Location1.0 MI W of M-52
RouteState Highway 50
Coordinates42.01179, -84.02341
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length26 ft (7.8 m)
Longest span26 ft (7.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,076 (2007)
Projected traffic9,272 by 2018
Trucks7%
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

OwnerState Highway Agency
Maintained byState 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 M-50 over Wilson Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is M-50 over Wilson 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 May 2024.

How much traffic does M-50 over Wilson Creek carry?

About 7,076 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is M-50 over Wilson Creek?

The structure is 26 ft (7.8 m) long with a longest span of 26 ft (7.8 m).

Who owns M-50 over Wilson Creek?

It is owned by the State Highway Agency.