US Bridges

East Munising Ave over Anna River

Fair

Alger County, Michigan · 0.5 MI from M-28 Old M-94 · Structure no. 000000000000085

Built
1978
47 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
5,715
1991 count
Owner
City
City or Municipal Highway Agency

About this bridge

East Munising Ave over Anna River is a prestressed concrete box beam or girders - multiple carrying East Munising Ave over Anna River in Alger County, Michigan. It was built in 1978, so it is 47 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 5,715 vehicles a day, roughly 10% of them trucks, projected to reach 8,650 by 2011. The structure is 39 ft (11.8 m) long and 36 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesEast Munising Ave
CrossesAnna River
Location0.5 MI from M-28 Old M-94
RouteCity Street 260
CountyAlger County
StateMichigan
Coordinates46.40905, -86.6404
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.5 US tons
Inventory rating54.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length39 ft (11.8 m)
Longest span36 ft (10.9 m)
Deck width36 ft (10.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,715 (1991)
Projected traffic8,650 by 2011
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was East Munising Ave over Anna River built?

It was built in 1978, making it 47 years old in 2025.

What condition is East Munising Ave over Anna 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 May 2024.

How much traffic does East Munising Ave over Anna River carry?

About 5,715 vehicles per day (1991 count), of which roughly 10% are trucks.

How long is East Munising Ave over Anna River?

The structure is 39 ft (11.8 m) long with a longest span of 36 ft (10.9 m) and a deck 36 ft wide.

Who owns East Munising Ave over Anna River?

It is owned by the City or Municipal Highway Agency.