US Bridges

M-139 over US-31

Fair

Berrien County, Michigan · 2.0 MI NW Berrien Springs · Structure no. 000000000012698

Built
1997
28 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
403 ft
5 main spans
Daily traffic
10,910
2007 count
Owner
State
State Highway Agency

About this bridge

M-139 over US-31 is a prestressed concrete stringer/multi-beam or girder carrying M-139 over US-31 in Berrien County, Michigan. It was built in 1997, so it is 28 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 10,910 vehicles a day, roughly 8% of them trucks, projected to reach 10,925 by 2018. The structure is 403 ft (122.9 m) long and 99 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesM-139
CrossesUS-31
Location2.0 MI NW Berrien Springs
RouteState Highway 139
CountyBerrien County
StateMichigan
Coordinates41.96345, -86.37442
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length403 ft (122.9 m)
Longest span119 ft (36.3 m)
Deck width99 ft (30.3 m)
Roadway width96 ft (29.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,910 (2007)
Projected traffic10,925 by 2018
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-139 over US-31 built?

It was built in 1997, making it 28 years old in 2025.

What condition is M-139 over US-31 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 May 2024.

How much traffic does M-139 over US-31 carry?

About 10,910 vehicles per day (2007 count), of which roughly 8% are trucks.

How long is M-139 over US-31?

The structure is 403 ft (122.9 m) long with a longest span of 119 ft (36.3 m) and a deck 99 ft wide.

Who owns M-139 over US-31?

It is owned by the State Highway Agency.