US Bridges

River Road over Betsie River

Fair

Benzie County, Michigan · 2.6 MI East of Frankfort · Structure no. 000000000000764

Built
1960
65 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
2 main spans
Daily traffic
1,329
2008 count
Owner
County
County Highway Agency

About this bridge

River Road over Betsie River is a prestressed concrete box beam or girders - multiple carrying River Road over Betsie River in Benzie County, Michigan. It was built in 1960, so it is 65 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 1,329 vehicles a day, roughly 10% of them trucks, projected to reach 1,734 by 2018. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesRiver Road
CrossesBetsie River
Location2.6 MI East of Frankfort
RouteCounty Highway 1040
Coordinates44.6183, -86.16766
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length70 ft (21.3 m)
Longest span34 ft (10.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,329 (2008)
Projected traffic1,734 by 2018
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was River Road over Betsie River built?

It was built in 1960, making it 65 years old in 2025.

What condition is River Road 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 August 2024.

How much traffic does River Road over Betsie River carry?

About 1,329 vehicles per day (2008 count), of which roughly 10% are trucks.

How long is River Road over Betsie River?

The structure is 70 ft (21.3 m) long with a longest span of 34 ft (10.3 m) and a deck 24 ft wide.

Who owns River Road over Betsie River?

It is owned by the County Highway Agency.