US Bridges

Diamond Ave over I-196 & M-21

Fair

Kent County, Michigan · In Grand Rapids · Structure no. 000000000004793

Built
2010
15 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
159 ft
2 main spans
Daily traffic
7,101
1992 count
Owner
State
State Highway Agency

About this bridge

Diamond Ave over I-196 & M-21 is a prestressed concrete box beam or girders - single or spread carrying Diamond Ave over I-196 & M-21 in Kent County, Michigan. It was built in 2010, so it is 15 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 7,101 vehicles a day, roughly 3% of them trucks, projected to reach 7,800 by 2030. The structure is 159 ft (48.6 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDiamond Ave
CrossesI-196 & M-21
LocationIn Grand Rapids
RouteCity Street 0
CountyKent County
StateMichigan
Coordinates42.97359, -85.64469
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating42.9 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 length159 ft (48.6 m)
Longest span80 ft (24.5 m)
Deck width60 ft (18.4 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,101 (1992)
Projected traffic7,800 by 2030
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 Diamond Ave over I-196 & M-21 built?

It was built in 2010, making it 15 years old in 2025.

What condition is Diamond 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 April 2023.

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

About 7,101 vehicles per day (1992 count), of which roughly 3% are trucks.

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

The structure is 159 ft (48.6 m) long with a longest span of 80 ft (24.5 m) and a deck 60 ft wide.

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

It is owned by the State Highway Agency.