US Bridges

CR 1800S over Kankakee River

Fair

LaPorte County, Indiana · 00.50 E SR 39 · Structure no. 4600091

Built
1981
44 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
174 ft
3 main spans
Daily traffic
150
2020 count
Owner
County
County Highway Agency

About this bridge

CR 1800S over Kankakee River is a prestressed concrete continuous stringer/multi-beam or girder carrying CR 1800S over Kankakee River in LaPorte County, Indiana. It was built in 1981, so it is 44 years old, younger 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 187 by 2040. The structure is 174 ft (53.1 m) long and 29 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCR 1800S
CrossesKankakee River
Location00.50 E SR 39
RouteCounty Highway 446
CountyLaPorte County
StateIndiana
Coordinates41.3469, -86.72803
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53.1 m)
Longest span56 ft (17.2 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic187 by 2040
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$267,000 (2020 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was CR 1800S over Kankakee River built?

It was built in 1981, making it 44 years old in 2025.

What condition is CR 1800S over Kankakee River 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 1800S over Kankakee River carry?

About 150 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is CR 1800S over Kankakee River?

The structure is 174 ft (53.1 m) long with a longest span of 56 ft (17.2 m) and a deck 29 ft wide.

Who owns CR 1800S over Kankakee River?

It is owned by the County Highway Agency.