US Bridges

Brown Road over Whackenbush Drain

Fair

St. Clair County, Michigan · Sec 16-17 Kenockee Twp · Structure no. 000000000010201

Built
1980
45 years old
Condition
Fair
inspected March 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
135
1994 count
Owner
County
County Highway Agency

About this bridge

Brown Road over Whackenbush Drain is a steel culvert carrying Brown Road over Whackenbush Drain in St. Clair County, Michigan. It was built in 1980, so it is 45 years old, younger 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 135 vehicles a day, roughly 3% of them trucks, projected to reach 155 by 2014. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesBrown Road
CrossesWhackenbush Drain
LocationSec 16-17 Kenockee Twp
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates43.03238, -82.71323
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (1994)
Projected traffic155 by 2014
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$7,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Brown Road over Whackenbush Drain built?

It was built in 1980, making it 45 years old in 2025.

What condition is Brown Road over Whackenbush Drain 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 March 2023.

How much traffic does Brown Road over Whackenbush Drain carry?

About 135 vehicles per day (1994 count), of which roughly 3% are trucks.

How long is Brown Road over Whackenbush Drain?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns Brown Road over Whackenbush Drain?

It is owned by the County Highway Agency.