US Bridges

County Road B 36 over Bark River

Fair

Delta County, Michigan · 7 MI S E of Bark River · Structure no. 000000000002151

Built
1974
51 years old
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
28 ft
2 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

County Road B 36 over Bark River is a steel culvert carrying County Road B 36 over Bark River in Delta County, Michigan. It was built in 1974, so it is 51 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 20 vehicles a day, projected to reach 20 by 2042. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 123 mi (198 km).

Location

Open in Google Maps
CarriesCounty Road B 36
CrossesBark River
Location7 MI S E of Bark River
RouteCounty Highway 0
CountyDelta County
StateMichigan
Coordinates45.63765, -87.26468
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 alignment6: Equal to present minimum criteria
Operating rating55.7 US tons
Inventory rating48.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic20 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 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 County Road B 36 over Bark River built?

It was built in 1974, making it 51 years old in 2025.

What condition is County Road B 36 over Bark 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 County Road B 36 over Bark River carry?

About 20 vehicles per day (2022 count).

How long is County Road B 36 over Bark River?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (3.9 m).

Who owns County Road B 36 over Bark River?

It is owned by the County Highway Agency.