US Bridges

15 Mile RD over Big Beaver Drain

Fair

Macomb County, Michigan · West of Ryan RD · Structure no. 000000000006422

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
24,642
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

15 Mile RD over Big Beaver Drain is a concrete culvert carrying 15 Mile RD over Big Beaver Drain in Macomb County, Michigan. It was built in 1984, so it is 41 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 5 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 24,642 vehicles a day, roughly 5% of them trucks, projected to reach 27,227 by 2044. The structure is 34 ft (10.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Carries15 Mile RD
CrossesBig Beaver Drain
LocationWest of Ryan RD
RouteCity Street 2058
Coordinates42.55004, -83.07746
Functional classUrban Minor Arterial

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating107.1 US tons
Inventory rating73.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length34 ft (10.3 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,642 (2024)
Projected traffic27,227 by 2044
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 15 Mile RD over Big Beaver Drain built?

It was built in 1984, making it 41 years old in 2025.

What condition is 15 Mile RD over Big Beaver 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 September 2024.

How much traffic does 15 Mile RD over Big Beaver Drain carry?

About 24,642 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 15 Mile RD over Big Beaver Drain?

The structure is 34 ft (10.3 m) long with a longest span of 14 ft (4.2 m).

Who owns 15 Mile RD over Big Beaver Drain?

It is owned by the City or Municipal Highway Agency.