US Bridges

M-103 over White Pigeon River

Good

St. Joseph County, Michigan · 0.5 MI N of Indiana State · Structure no. 000000000010261

Built
1931
94 years old, rebuilt 1998
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
3,802
2007 count
Owner
State
State Highway Agency

About this bridge

M-103 over White Pigeon River is a prestressed concrete stringer/multi-beam or girder carrying M-103 over White Pigeon River in St. Joseph County, Michigan. It was built in 1931 and reconstructed in 1998, so it is 94 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,802 vehicles a day, roughly 24% of them trucks, projected to reach 4,853 by 2018. The structure is 100 ft (30.4 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesM-103
CrossesWhite Pigeon River
Location0.5 MI N of Indiana State
RouteState Highway 103
Coordinates41.76985, -85.77328
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating95 US tons
Inventory rating56.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length100 ft (30.4 m)
Longest span50 ft (15.2 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,802 (2007)
Projected traffic4,853 by 2018
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-103 over White Pigeon River built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1998.

What condition is M-103 over White Pigeon River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does M-103 over White Pigeon River carry?

About 3,802 vehicles per day (2007 count), of which roughly 24% are trucks.

How long is M-103 over White Pigeon River?

The structure is 100 ft (30.4 m) long with a longest span of 50 ft (15.2 m) and a deck 47 ft wide.

Who owns M-103 over White Pigeon River?

It is owned by the State Highway Agency.