US Bridges

CR 850S over Osborn Ditch

Fair

Starke County, Indiana · 00.50 W CR 850 E · Structure no. 7500033

Built
1953
72 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
62 ft
3 main spans
Daily traffic
525
2016 count
Owner
County
County Highway Agency

About this bridge

CR 850S over Osborn Ditch is a concrete continuous slab carrying CR 850S over Osborn Ditch in Starke County, Indiana. It was built in 1953, so it is 72 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 525 vehicles a day, roughly 5% of them trucks, projected to reach 775 by 2036. The structure is 62 ft (18.9 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 850S
CrossesOsborn Ditch
Location00.50 W CR 850 E
RouteCounty Highway 10
CountyStarke County
StateIndiana
Coordinates41.17903, -86.54073
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.6 US tons
Inventory rating35.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2016)
Projected traffic775 by 2036
Trucks5%
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 850S over Osborn Ditch built?

It was built in 1953, making it 72 years old in 2025.

What condition is CR 850S over Osborn 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 850S over Osborn Ditch carry?

About 525 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is CR 850S over Osborn Ditch?

The structure is 62 ft (18.9 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns CR 850S over Osborn Ditch?

It is owned by the County Highway Agency.