US Bridges

Brown Road over Mill Creek

Fair

St. Clair County, Michigan · Sec. 8-9 Kenockee Twp. · Structure no. 000000000010202

Built
1997
28 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
56
1997 count
Owner
County
County Highway Agency

About this bridge

Brown Road over Mill Creek is a prestressed concrete box beam or girders - multiple carrying Brown Road over Mill Creek in St. Clair County, Michigan. It was built in 1997, so it is 28 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 56 vehicles a day, projected to reach 150 by 2017. The structure is 99 ft (30.2 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesBrown Road
CrossesMill Creek
LocationSec. 8-9 Kenockee Twp.
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates43.04633, -82.71409
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.9 US tons
Inventory rating52.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length99 ft (30.2 m)
Longest span93 ft (28.3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (1997)
Projected traffic150 by 2017
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Brown Road over Mill Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Brown Road over Mill Creek 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 Mill Creek carry?

About 56 vehicles per day (1997 count).

How long is Brown Road over Mill Creek?

The structure is 99 ft (30.2 m) long with a longest span of 93 ft (28.3 m) and a deck 34 ft wide.

Who owns Brown Road over Mill Creek?

It is owned by the County Highway Agency.