US Bridges

CR 100W over Cottonwood Ditch

Fair

Starke County, Indiana · 00.50 N of CR 150 S · Structure no. 7500067

Built
1935
90 years old, rebuilt 1981
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
180
2016 count
Owner
County
County Highway Agency

About this bridge

CR 100W over Cottonwood Ditch is a prestressed concrete box beam or girders - multiple carrying CR 100W over Cottonwood Ditch in Starke County, Indiana. It was built in 1935 and reconstructed in 1981, so it is 90 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 180 vehicles a day, roughly 5% of them trucks, projected to reach 275 by 2036. The structure is 50 ft (15.3 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCR 100W
CrossesCottonwood Ditch
Location00.50 N of CR 150 S
RouteCounty Highway 100
CountyStarke County
StateIndiana
Coordinates41.28812, -86.71774
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.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating31.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.3 m)
Longest span47 ft (14.4 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2016)
Projected traffic275 by 2036
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 100W over Cottonwood Ditch built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1981.

What condition is CR 100W over Cottonwood 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 October 2024.

How much traffic does CR 100W over Cottonwood Ditch carry?

About 180 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is CR 100W over Cottonwood Ditch?

The structure is 50 ft (15.3 m) long with a longest span of 47 ft (14.4 m) and a deck 20 ft wide.

Who owns CR 100W over Cottonwood Ditch?

It is owned by the County Highway Agency.