US Bridges

Maryland Ave over I-196 & M-21

Fair

Kent County, Michigan · In Grand Rapids · Structure no. 000000000004795

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
230 ft
4 main spans
Daily traffic
6,500
2016 count
Owner
State
State Highway Agency

About this bridge

Maryland Ave over I-196 & M-21 is a prestressed concrete stringer/multi-beam or girder carrying Maryland Ave over I-196 & M-21 in Kent County, Michigan. It was built in 1963, so it is 62 years old, older 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 6,500 vehicles a day, roughly 3% of them trucks, projected to reach 10,000 by 2036. The structure is 230 ft (70.2 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMaryland Ave
CrossesI-196 & M-21
LocationIn Grand Rapids
RouteCity Street 2001
CountyKent County
StateMichigan
Coordinates42.9766, -85.61045
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.8 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length230 ft (70.2 m)
Longest span72 ft (21.9 m)
Deck width35 ft (10.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2016)
Projected traffic10,000 by 2036
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Maryland Ave over I-196 & M-21 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Maryland 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 May 2024.

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

About 6,500 vehicles per day (2016 count), of which roughly 3% are trucks.

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

The structure is 230 ft (70.2 m) long with a longest span of 72 ft (21.9 m) and a deck 35 ft wide.

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

It is owned by the State Highway Agency.