US Bridges

CR 600W over Thompson Ditch

Poor

Pulaski County, Indiana · 00.50 N of CR 200 N · Structure no. 6600075

Built
1930
95 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
180
2022 count
Owner
County
County Highway Agency

About this bridge

CR 600W over Thompson Ditch is a steel stringer/multi-beam or girder carrying CR 600W over Thompson Ditch in Pulaski County, Indiana. It was built in 1930, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 180 vehicles a day, roughly 5% of them trucks, projected to reach 220 by 2042. The structure is 44 ft (13.5 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCR 600W
CrossesThompson Ditch
Location00.50 N of CR 200 N
RouteCounty Highway 53
CountyPulaski County
StateIndiana
Coordinates41.09223, -86.71811
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 alignment6: Equal to present minimum criteria
Operating rating48.3 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length44 ft (13.5 m)
Longest span41 ft (12.6 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2022)
Projected traffic220 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$857,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 600W over Thompson Ditch built?

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

What condition is CR 600W over Thompson Ditch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does CR 600W over Thompson Ditch carry?

About 180 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is CR 600W over Thompson Ditch?

The structure is 44 ft (13.5 m) long with a longest span of 41 ft (12.6 m) and a deck 24 ft wide.

Who owns CR 600W over Thompson Ditch?

It is owned by the County Highway Agency.