US Bridges

M-94 over Canadian National RR

Fair

Alger County, Michigan · 5.2 MI SW of Munising · Structure no. 000000000000039

Built
1945
80 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
121 ft
3 main spans
Daily traffic
1,848
2007 count
Owner
State
State Highway Agency

About this bridge

M-94 over Canadian National RR is a steel stringer/multi-beam or girder carrying M-94 over Canadian National RR in Alger County, Michigan. It was built in 1945, so it is 80 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 1,848 vehicles a day, roughly 16% of them trucks, projected to reach 1,983 by 2018. The structure is 121 ft (36.9 m) long and 38 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesM-94
CrossesCanadian National RR
Location5.2 MI SW of Munising
RouteState Highway 94
CountyAlger County
StateMichigan
Coordinates46.37707, -86.69965
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length121 ft (36.9 m)
Longest span41 ft (12.5 m)
Deck width38 ft (11.5 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,848 (2007)
Projected traffic1,983 by 2018
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed19.3 mi (31 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 M-94 over Canadian National RR built?

It was built in 1945, making it 80 years old in 2025.

What condition is M-94 over Canadian National RR 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 2023.

How much traffic does M-94 over Canadian National RR carry?

About 1,848 vehicles per day (2007 count), of which roughly 16% are trucks.

How long is M-94 over Canadian National RR?

The structure is 121 ft (36.9 m) long with a longest span of 41 ft (12.5 m) and a deck 38 ft wide.

Who owns M-94 over Canadian National RR?

It is owned by the State Highway Agency.