US Bridges

Lll Road (old M95) over Michigamme River

Poor

Marquette County, Michigan · 1.4 MI N of So Republic · Structure no. 000000000006605

Built
1934
91 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
3 main spans
Daily traffic
10
2001 count
Owner
County
County Highway Agency

About this bridge

Lll Road (old M95) over Michigamme River is a steel stringer/multi-beam or girder carrying Lll Road (old M95) over Michigamme River in Marquette County, Michigan. It was built in 1934, so it is 91 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10 vehicles a day, projected to reach 10 by 2020. The structure is 150 ft (45.7 m) long and 31 ft wide. If it were closed, the detour would be 124.3 mi (200 km).

CarriesLll Road (old M95)
CrossesMichigamme River
Location1.4 MI N of So Republic
RouteCounty Highway 0
Coordinates46.3832, -87.97871
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.4 US tons
Inventory rating31.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span48 ft (14.6 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2001)
Projected traffic10 by 2020
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed124.3 mi (200 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lll Road (old M95) over Michigamme River built?

It was built in 1934, making it 91 years old in 2025.

What condition is Lll Road (old M95) over Michigamme River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Lll Road (old M95) over Michigamme River carry?

About 10 vehicles per day (2001 count).

How long is Lll Road (old M95) over Michigamme River?

The structure is 150 ft (45.7 m) long with a longest span of 48 ft (14.6 m) and a deck 31 ft wide.

Who owns Lll Road (old M95) over Michigamme River?

It is owned by the County Highway Agency.