US Bridges

M-35 over Middle Br Escanaba River

Fair

Marquette County, Michigan · 1.2 MI W of Gwinn · Structure no. 000000000006487

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
200 ft
3 main spans
Daily traffic
4,907
2007 count
Owner
State
State Highway Agency

About this bridge

M-35 over Middle Br Escanaba River is a steel stringer/multi-beam or girder carrying M-35 over Middle Br Escanaba River in Marquette County, Michigan. It was built in 1967, so it is 58 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 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 4,907 vehicles a day, roughly 3% of them trucks, projected to reach 7,278 by 2018. The structure is 200 ft (60.9 m) long and 48 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

Location

Open in Google Maps
CarriesM-35
CrossesMiddle Br Escanaba River
Location1.2 MI W of Gwinn
RouteState Highway 35
CountyMarquette County
StateMichigan
Coordinates46.28544, -87.4539
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length200 ft (60.9 m)
Longest span74 ft (22.6 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,907 (2007)
Projected traffic7,278 by 2018
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-35 over Middle Br Escanaba River built?

It was built in 1967, making it 58 years old in 2025.

What condition is M-35 over Middle Br Escanaba 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 June 2023.

How much traffic does M-35 over Middle Br Escanaba River carry?

About 4,907 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is M-35 over Middle Br Escanaba River?

The structure is 200 ft (60.9 m) long with a longest span of 74 ft (22.6 m) and a deck 48 ft wide.

Who owns M-35 over Middle Br Escanaba River?

It is owned by the State Highway Agency.