US Bridges

I-75 over Brownstown Creek

Fair

Wayne County, Michigan · 4.2 MI N of N Huron Ri DR · Structure no. 000000000011634

Built
2006
19 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
53,028
2010 count
Owner
State
State Highway Agency

About this bridge

I-75 over Brownstown Creek is a concrete culvert carrying I-75 over Brownstown Creek in Wayne County, Michigan. It was built in 2006, so it is 19 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 53,028 vehicles a day, roughly 18% of them trucks, projected to reach 60,187 by 2025. The structure is 22 ft (6.6 m) long.

CarriesI-75
CrossesBrownstown Creek
Location4.2 MI N of N Huron Ri DR
RouteInterstate 75
Coordinates42.12663, -83.24117
Functional classUrban Principal Arterial - Interstate

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 inspectionJuly 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.5 US tons
Inventory rating44.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length22 ft (6.6 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53,028 (2010)
Projected traffic60,187 by 2025
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I-75 over Brownstown Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is I-75 over Brownstown 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 July 2024.

How much traffic does I-75 over Brownstown Creek carry?

About 53,028 vehicles per day (2010 count), of which roughly 18% are trucks.

How long is I-75 over Brownstown Creek?

The structure is 22 ft (6.6 m) long with a longest span of 20 ft (6.1 m).

Who owns I-75 over Brownstown Creek?

It is owned by the State Highway Agency.