US Bridges

4 Mile Road over US 131

Fair

Mecosta County, Michigan · 3 Miles NW of Morley · Structure no. 000000000006712

Built
1979
46 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
373 ft
5 main spans
Daily traffic
110
1981 count
Owner
State
State Highway Agency

About this bridge

4 Mile Road over US 131 is a steel stringer/multi-beam or girder carrying 4 Mile Road over US 131 in Mecosta County, Michigan. It was built in 1979, so it is 46 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 110 vehicles a day, projected to reach 110 by 1977. The structure is 373 ft (113.7 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries4 Mile Road
CrossesUS 131
Location3 Miles NW of Morley
RouteCounty Highway 0
CountyMecosta County
StateMichigan
Coordinates43.52584, -85.48604
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.9 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length373 ft (113.7 m)
Longest span98 ft (29.8 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (1981)
Projected traffic110 by 1977
Trucks—
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$107,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was 4 Mile Road over US 131 built?

It was built in 1979, making it 46 years old in 2025.

What condition is 4 Mile Road over US 131 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 June 2023.

How much traffic does 4 Mile Road over US 131 carry?

About 110 vehicles per day (1981 count).

How long is 4 Mile Road over US 131?

The structure is 373 ft (113.7 m) long with a longest span of 98 ft (29.8 m) and a deck 40 ft wide.

Who owns 4 Mile Road over US 131?

It is owned by the State Highway Agency.