US Bridges

Coit Ave over I-196 & M-21

Fair

Kent County, Michigan · In Grand Rapids · Structure no. 000000000004788

Built
2009
16 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
153 ft
2 main spans
Daily traffic
2,750
1988 count
Owner
State
State Highway Agency

About this bridge

Coit Ave over I-196 & M-21 is a prestressed concrete box beam or girders - single or spread carrying Coit Ave over I-196 & M-21 in Kent County, Michigan. It was built in 2009, so it is 16 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 5 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 2,750 vehicles a day, roughly 1% of them trucks, projected to reach 3,500 by 2030. The structure is 153 ft (46.6 m) long and 54 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCoit Ave
CrossesI-196 & M-21
LocationIn Grand Rapids
RouteCity Street 0
CountyKent County
StateMichigan
Coordinates42.97154, -85.66439
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 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 length153 ft (46.6 m)
Longest span74 ft (22.6 m)
Deck width54 ft (16.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,750 (1988)
Projected traffic3,500 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Coit Ave over I-196 & M-21 built?

It was built in 2009, making it 16 years old in 2025.

What condition is Coit Ave over I-196 & M-21 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 March 2023.

How much traffic does Coit Ave over I-196 & M-21 carry?

About 2,750 vehicles per day (1988 count), of which roughly 1% are trucks.

How long is Coit Ave over I-196 & M-21?

The structure is 153 ft (46.6 m) long with a longest span of 74 ft (22.6 m) and a deck 54 ft wide.

Who owns Coit Ave over I-196 & M-21?

It is owned by the State Highway Agency.