US Bridges

South Michigan ST over Yellow River

Fair

Marshall County, Indiana · 00.10 N of Lake Street · Structure no. 5000002

Built
1917
108 years old, rebuilt 2008
Condition
Fair
inspected October 2024
Type
Arch - Deck
Concrete
Length
130 ft
2 main spans
Daily traffic
10,525
2024 count
Owner
County
County Highway Agency

About this bridge

South Michigan ST over Yellow River is a concrete arch - deck carrying South Michigan ST over Yellow River in Marshall County, Indiana. It was built in 1917 and reconstructed in 2008, so it is 108 years old, older than the Indiana average of 46.6 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 10,525 vehicles a day, roughly 8% of them trucks, projected to reach 15,375 by 2044. The structure is 130 ft (39.6 m) long and 62 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSouth Michigan ST
CrossesYellow River
Location00.10 N of Lake Street
RouteCity Street 0
CountyMarshall County
StateIndiana
Coordinates41.3395, -86.30888
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span60 ft (18.2 m)
Deck width62 ft (19 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,525 (2024)
Projected traffic15,375 by 2044
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was South Michigan ST over Yellow River built?

It was built in 1917, making it 108 years old in 2025. It was reconstructed in 2008.

What condition is South Michigan ST over Yellow 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 2024.

How much traffic does South Michigan ST over Yellow River carry?

About 10,525 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is South Michigan ST over Yellow River?

The structure is 130 ft (39.6 m) long with a longest span of 60 ft (18.2 m) and a deck 62 ft wide.

Who owns South Michigan ST over Yellow River?

It is owned by the County Highway Agency.