US Bridges

NB Mound RD over M-59

Fair

Macomb County, Michigan · 0.5 Mi. West Utica · Structure no. 000000000006063

Built
1994
31 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
130 ft
2 main spans
Daily traffic
11,100
1993 count
Owner
State
State Highway Agency

About this bridge

NB Mound RD over M-59 is a prestressed concrete stringer/multi-beam or girder carrying NB Mound RD over M-59 in Macomb County, Michigan. It was built in 1994, so it is 31 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,100 vehicles a day, roughly 4% of them trucks, projected to reach 11,100 by 2010. The structure is 130 ft (39.6 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB Mound RD
CrossesM-59
Location0.5 Mi. West Utica
RouteCounty Highway 2058
CountyMacomb County
StateMichigan
Coordinates42.62473, -83.05187
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length130 ft (39.6 m)
Longest span63 ft (19.2 m)
Deck width52 ft (16 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (1993)
Projected traffic11,100 by 2010
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NB Mound RD over M-59 built?

It was built in 1994, making it 31 years old in 2025.

What condition is NB Mound RD over M-59 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does NB Mound RD over M-59 carry?

About 11,100 vehicles per day (1993 count), of which roughly 4% are trucks.

How long is NB Mound RD over M-59?

The structure is 130 ft (39.6 m) long with a longest span of 63 ft (19.2 m) and a deck 52 ft wide.

Who owns NB Mound RD over M-59?

It is owned by the State Highway Agency.