US Bridges

Lake Road over Montreal River

Fair

Gogebic County, Michigan · Sec 15 Ironwood Twp · Structure no. 000000000002983

Built
1928
97 years old, rebuilt 1987
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
2 main spans
Daily traffic
388
2012 count
Owner
County
County Highway Agency

About this bridge

Lake Road over Montreal River is a steel stringer/multi-beam or girder carrying Lake Road over Montreal River in Gogebic County, Michigan. It was built in 1928 and reconstructed in 1987, so it is 97 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 388 vehicles a day, roughly 3% of them trucks, projected to reach 400 by 2032. The structure is 100 ft (30.5 m) long and 32 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesLake Road
CrossesMontreal River
LocationSec 15 Ironwood Twp
RouteCounty Highway 2778
CountyGogebic County
StateMichigan
Coordinates46.55744, -90.41418
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating48.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length100 ft (30.5 m)
Longest span50 ft (15.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic388 (2012)
Projected traffic400 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$791,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lake Road over Montreal River built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1987.

What condition is Lake Road over Montreal 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 September 2024.

How much traffic does Lake Road over Montreal River carry?

About 388 vehicles per day (2012 count), of which roughly 3% are trucks.

How long is Lake Road over Montreal River?

The structure is 100 ft (30.5 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.

Who owns Lake Road over Montreal River?

It is owned by the County Highway Agency.