US Bridges

M-99 (superior St) over S Br Kalamazoo River

Fair

Calhoun County, Michigan · S Lts of Albion · Structure no. 000000000001287

Built
2011
14 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
140 ft
2 main spans
Daily traffic
1,620
2011 count
Owner
State
State Highway Agency

About this bridge

M-99 (superior St) over S Br Kalamazoo River is a prestressed concrete box beam or girders - single or spread carrying M-99 (superior St) over S Br Kalamazoo River in Calhoun County, Michigan. It was built in 2011, so it is 14 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 1,620 vehicles a day, roughly 12% of them trucks, projected to reach 1,780 by 2031. The structure is 140 ft (42.7 m) long and 55 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesM-99 (superior St)
CrossesS Br Kalamazoo River
LocationS Lts of Albion
RouteState Highway 99
CountyCalhoun County
StateMichigan
Coordinates42.23619, -84.75309
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating48.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length140 ft (42.7 m)
Longest span68 ft (20.8 m)
Deck width55 ft (16.7 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,620 (2011)
Projected traffic1,780 by 2031
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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-99 (superior St) over S Br Kalamazoo River built?

It was built in 2011, making it 14 years old in 2025.

What condition is M-99 (superior St) over S Br Kalamazoo 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 September 2023.

How much traffic does M-99 (superior St) over S Br Kalamazoo River carry?

About 1,620 vehicles per day (2011 count), of which roughly 12% are trucks.

How long is M-99 (superior St) over S Br Kalamazoo River?

The structure is 140 ft (42.7 m) long with a longest span of 68 ft (20.8 m) and a deck 55 ft wide.

Who owns M-99 (superior St) over S Br Kalamazoo River?

It is owned by the State Highway Agency.