US Bridges

Boardman River RD over N Br Boardman River

Fair

Kalkaska County, Michigan · 0.28 MI S of S River RD · Structure no. 000000000014668

Built
1955
70 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
37 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Boardman River RD over N Br Boardman River is a steel culvert carrying Boardman River RD over N Br Boardman River in Kalkaska County, Michigan. It was built in 1955, so it is 70 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 100 vehicles a day, projected to reach 115 by 2043. The structure is 37 ft (11.2 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesBoardman River RD
CrossesN Br Boardman River
Location0.28 MI S of S River RD
RouteCounty Highway 0
CountyKalkaska County
StateMichigan
Coordinates44.699, -85.3056
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating93.3 US tons
Inventory rating55.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span16 ft (5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic115 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Boardman River RD over N Br Boardman River built?

It was built in 1955, making it 70 years old in 2025.

What condition is Boardman River RD over N Br Boardman 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 May 2024.

How much traffic does Boardman River RD over N Br Boardman River carry?

About 100 vehicles per day (2023 count).

How long is Boardman River RD over N Br Boardman River?

The structure is 37 ft (11.2 m) long with a longest span of 16 ft (5 m).

Who owns Boardman River RD over N Br Boardman River?

It is owned by the County Highway Agency.