US Bridges

County RD 581 over M Br Escanaba River

Good

Marquette County, Michigan · 6 Miles S of Greenwood · Structure no. 000000000006540

Built
2008
17 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
1,360
2007 count
Owner
County
County Highway Agency

About this bridge

County RD 581 over M Br Escanaba River is a prestressed concrete box beam or girders - multiple carrying County RD 581 over M Br Escanaba River in Marquette County, Michigan. It was built in 2008, so it is 17 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 1,360 vehicles a day, projected to reach 1,660 by 2027. The structure is 100 ft (30.5 m) long and 37 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCounty RD 581
CrossesM Br Escanaba River
Location6 Miles S of Greenwood
RouteCounty Highway 5231
CountyMarquette County
StateMichigan
Coordinates46.39773, -87.76886
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.9 US tons
Inventory rating42.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span96 ft (29.3 m)
Deck width37 ft (11.4 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,360 (2007)
Projected traffic1,660 by 2027
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 RD 581 over M Br Escanaba River built?

It was built in 2008, making it 17 years old in 2025.

What condition is County RD 581 over M Br Escanaba River 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 RD 581 over M Br Escanaba River carry?

About 1,360 vehicles per day (2007 count).

How long is County RD 581 over M Br Escanaba River?

The structure is 100 ft (30.5 m) long with a longest span of 96 ft (29.3 m) and a deck 37 ft wide.

Who owns County RD 581 over M Br Escanaba River?

It is owned by the County Highway Agency.