US Bridges

CR 1350S over Slocum Ditch

Fair

LaPorte County, Indiana · 00.70 W US 421 · Structure no. 4600077

Built
1923
102 years old, rebuilt 1996
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
400
2022 count
Owner
County
County Highway Agency

About this bridge

CR 1350S over Slocum Ditch is a prestressed concrete box beam or girders - multiple carrying CR 1350S over Slocum Ditch in LaPorte County, Indiana. It was built in 1923 and reconstructed in 1996, so it is 102 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 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 400 vehicles a day, roughly 5% of them trucks, projected to reach 675 by 2042. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCR 1350S
CrossesSlocum Ditch
Location00.70 W US 421
RouteCounty Highway 20
CountyLaPorte County
StateIndiana
Coordinates41.412, -86.90586
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.2 US tons
Inventory rating44.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.4 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic675 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 1350S over Slocum Ditch built?

It was built in 1923, making it 102 years old in 2025. It was reconstructed in 1996.

What condition is CR 1350S over Slocum Ditch 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 September 2024.

How much traffic does CR 1350S over Slocum Ditch carry?

About 400 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is CR 1350S over Slocum Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.4 m) and a deck 28 ft wide.

Who owns CR 1350S over Slocum Ditch?

It is owned by the County Highway Agency.