US Bridges

CR 600S over Sandy Hook Ditch

Fair

Porter County, Indiana · 00.80 E Smoke Road · Structure no. 6400053

Built
1930
95 years old, rebuilt 1975
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
300
2018 count
Owner
County
County Highway Agency

About this bridge

CR 600S over Sandy Hook Ditch is a prestressed concrete box beam or girders - multiple carrying CR 600S over Sandy Hook Ditch in Porter County, Indiana. It was built in 1930 and reconstructed in 1975, 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 300 vehicles a day, roughly 6% of them trucks, projected to reach 570 by 2038. The structure is 35 ft (10.6 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCR 600S
CrossesSandy Hook Ditch
Location00.80 E Smoke Road
RouteCounty Highway 20
StateIndiana
Coordinates41.34752, -87.05252
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 protection7 GoodSome minor problems.
Last inspectionMay 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length35 ft (10.6 m)
Longest span30 ft (9.2 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2018)
Projected traffic570 by 2038
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 600S over Sandy Hook Ditch built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1975.

What condition is CR 600S over Sandy Hook 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 600S over Sandy Hook Ditch carry?

About 300 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is CR 600S over Sandy Hook Ditch?

The structure is 35 ft (10.6 m) long with a longest span of 30 ft (9.2 m) and a deck 24 ft wide.

Who owns CR 600S over Sandy Hook Ditch?

It is owned by the County Highway Agency.