US Bridges

M-22|LAKE ST over Betsie River

Fair

Benzie County, Michigan · NE Lts of Elberta · Structure no. 000000000000752

Built
1924
101 years old, rebuilt 1995
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
4,712
2007 count
Owner
State
State Highway Agency

About this bridge

M-22|LAKE ST over Betsie River is a prestressed concrete box beam or girders - single or spread carrying M-22|LAKE ST over Betsie River in Benzie County, Michigan. It was built in 1924 and reconstructed in 1995, so it is 101 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 4,712 vehicles a day, roughly 1% of them trucks, projected to reach 5,603 by 2018. The structure is 61 ft (18.5 m) long and 43 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesM-22|LAKE ST
CrossesBetsie River
LocationNE Lts of Elberta
RouteState Highway 22
CountyBenzie County
StateMichigan
Coordinates44.62036, -86.2215
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating107.1 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length61 ft (18.5 m)
Longest span58 ft (17.6 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,712 (2007)
Projected traffic5,603 by 2018
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-22|LAKE ST over Betsie River built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1995.

What condition is M-22|LAKE ST over Betsie 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 July 2024.

How much traffic does M-22|LAKE ST over Betsie River carry?

About 4,712 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is M-22|LAKE ST over Betsie River?

The structure is 61 ft (18.5 m) long with a longest span of 58 ft (17.6 m) and a deck 43 ft wide.

Who owns M-22|LAKE ST over Betsie River?

It is owned by the State Highway Agency.