US Bridges

M-14 over Rouge River

Fair

Wayne County, Michigan · 0.3 MI West of Plymouth · Structure no. 000000000011350

Built
1976
49 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
117 ft
1 main span
Daily traffic
93,826
2007 count
Owner
State
State Highway Agency

About this bridge

M-14 over Rouge River is a steel stringer/multi-beam or girder carrying M-14 over Rouge River in Wayne County, Michigan. It was built in 1976, so it is 49 years old, older 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 93,826 vehicles a day, roughly 7% of them trucks, projected to reach 110,000 by 2026. The structure is 117 ft (35.8 m) long and 133 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-14
CrossesRouge River
Location0.3 MI West of Plymouth
RouteState Highway 14
CountyWayne County
StateMichigan
Coordinates42.39062, -83.46675
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.5 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length117 ft (35.8 m)
Longest span117 ft (35.8 m)
Deck width133 ft (40.4 m)
Roadway width117 ft (35.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93,826 (2007)
Projected traffic110,000 by 2026
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 M-14 over Rouge River built?

It was built in 1976, making it 49 years old in 2025.

What condition is M-14 over Rouge River 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 October 2023.

How much traffic does M-14 over Rouge River carry?

About 93,826 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is M-14 over Rouge River?

The structure is 117 ft (35.8 m) long with a longest span of 117 ft (35.8 m) and a deck 133 ft wide.

Who owns M-14 over Rouge River?

It is owned by the State Highway Agency.