US Bridges

County Road 550 over Wilson Creek

Good

Marquette County, Michigan · 3.4 MI N of Birch · Structure no. 000000000013839

Built
2014
11 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
27 ft
1 main span
Daily traffic
3,538
2013 count
Owner
County
County Highway Agency

About this bridge

County Road 550 over Wilson Creek is a concrete culvert carrying County Road 550 over Wilson Creek in Marquette County, Michigan. It was built in 2014, so it is 11 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 3,538 vehicles a day, roughly 3% of them trucks, projected to reach 3,831 by 2033. The structure is 27 ft (8.3 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCounty Road 550
CrossesWilson Creek
Location3.4 MI N of Birch
RouteCounty Highway 5283
CountyMarquette County
StateMichigan
Coordinates46.72883, -87.62134
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating42.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length27 ft (8.3 m)
Longest span25 ft (7.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,538 (2013)
Projected traffic3,831 by 2033
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Road 550 over Wilson Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is County Road 550 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 October 2024.

How much traffic does County Road 550 over Wilson Creek carry?

About 3,538 vehicles per day (2013 count), of which roughly 3% are trucks.

How long is County Road 550 over Wilson Creek?

The structure is 27 ft (8.3 m) long with a longest span of 25 ft (7.7 m).

Who owns County Road 550 over Wilson Creek?

It is owned by the County Highway Agency.