US Bridges

CR 500S over Slocum Ditch

Fair

Porter County, Indiana · 00.00 W CR 650 E · Structure no. 6400007

Built
1930
95 years old, rebuilt 1971
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
140
2018 count
Owner
County
County Highway Agency

About this bridge

CR 500S over Slocum Ditch is a prestressed concrete box beam or girders - multiple carrying CR 500S over Slocum Ditch in Porter County, Indiana. It was built in 1930 and reconstructed in 1971, so it is 95 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 140 vehicles a day, roughly 6% of them trucks, projected to reach 260 by 2038. The structure is 34 ft (10.3 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCR 500S
CrossesSlocum Ditch
Location00.00 W CR 650 E
RouteCounty Highway 24
StateIndiana
Coordinates41.36152, -86.94029
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length34 ft (10.3 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2018)
Projected traffic260 by 2038
Trucks6%
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

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 500S over Slocum Ditch built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1971.

What condition is CR 500S 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 May 2024.

How much traffic does CR 500S over Slocum Ditch carry?

About 140 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is CR 500S over Slocum Ditch?

The structure is 34 ft (10.3 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns CR 500S over Slocum Ditch?

It is owned by the County Highway Agency.