US Bridges

Kb Road over Wilson Creek

Good

Marquette County, Michigan · 0.04 MI N of HWY 550 · Structure no. 000000000006600

Built
2001
24 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
300
2000 count
Owner
County
County Highway Agency

About this bridge

Kb Road over Wilson Creek is a prestressed concrete box beam or girders - multiple carrying Kb Road over Wilson Creek in Marquette County, Michigan. It was built in 2001, so it is 24 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 300 vehicles a day, projected to reach 450 by 2020. The structure is 39 ft (12 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesKb Road
CrossesWilson Creek
Location0.04 MI N of HWY 550
RouteCounty Highway 0
CountyMarquette County
StateMichigan
Coordinates46.70061, -87.58228
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating33.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length39 ft (12 m)
Longest span34 ft (10.5 m)
Deck width34 ft (10.5 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2000)
Projected traffic450 by 2020
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Kb Road over Wilson Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Kb Road 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 Kb Road over Wilson Creek carry?

About 300 vehicles per day (2000 count).

How long is Kb Road over Wilson Creek?

The structure is 39 ft (12 m) long with a longest span of 34 ft (10.5 m) and a deck 34 ft wide.

Who owns Kb Road over Wilson Creek?

It is owned by the County Highway Agency.