US Bridges

M-90 over Flint River

Fair

Lapeer County, Michigan · 1.0MI W of North Branch · Structure no. 000000000005363

Built
1997
28 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
3,217
2007 count
Owner
State
State Highway Agency

About this bridge

M-90 over Flint River is a prestressed concrete box beam or girders - multiple carrying M-90 over Flint River in Lapeer 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 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 3,217 vehicles a day, roughly 7% of them trucks, projected to reach 3,522 by 2018. The structure is 101 ft (30.7 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-90
CrossesFlint River
Location1.0MI W of North Branch
RouteState Highway 90
CountyLapeer County
StateMichigan
Coordinates43.22869, -83.21477
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating59.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length101 ft (30.7 m)
Longest span101 ft (30.7 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,217 (2007)
Projected traffic3,522 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-90 over Flint River built?

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

What condition is M-90 over Flint River 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 April 2023.

How much traffic does M-90 over Flint River carry?

About 3,217 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is M-90 over Flint River?

The structure is 101 ft (30.7 m) long with a longest span of 101 ft (30.7 m) and a deck 47 ft wide.

Who owns M-90 over Flint River?

It is owned by the State Highway Agency.