US Bridges

17 Mile RD over Conrail Railroad

Fair

Macomb County, Michigan · East of Mound RD · Structure no. 000000000006425

Built
1981
44 years old, rebuilt 2014
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
215 ft
4 main spans
Daily traffic
20,082
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

17 Mile RD over Conrail Railroad is a steel continuous stringer/multi-beam or girder carrying 17 Mile RD over Conrail Railroad in Macomb County, Michigan. It was built in 1981 and reconstructed in 2014, so it is 44 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 20,082 vehicles a day, roughly 8% of them trucks, projected to reach 22,189 by 2044. The structure is 215 ft (65.4 m) long and 72 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries17 Mile RD
CrossesConrail Railroad
LocationEast of Mound RD
RouteCity Street 0
CountyMacomb County
StateMichigan
Coordinates42.58008, -83.03994
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 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
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length215 ft (65.4 m)
Longest span81 ft (24.6 m)
Deck width72 ft (22 m)
Roadway width68 ft (20.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,082 (2024)
Projected traffic22,189 by 2044
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 17 Mile RD over Conrail Railroad built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2014.

What condition is 17 Mile RD over Conrail Railroad 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 17 Mile RD over Conrail Railroad carry?

About 20,082 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is 17 Mile RD over Conrail Railroad?

The structure is 215 ft (65.4 m) long with a longest span of 81 ft (24.6 m) and a deck 72 ft wide.

Who owns 17 Mile RD over Conrail Railroad?

It is owned by the City or Municipal Highway Agency.