US Bridges

CR 850 W over Blair Ditch

Good

Gibson County, Indiana · 00.90 S of W Base RD · Structure no. 2600346

Built
2012
13 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

CR 850 W over Blair Ditch is a steel stringer/multi-beam or girder carrying CR 850 W over Blair Ditch in Gibson County, Indiana. It was built in 2012, so it is 13 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, roughly 50% of them trucks, projected to reach 60 by 2042. The structure is 62 ft (18.8 m) long and 24 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesCR 850 W
CrossesBlair Ditch
Location00.90 S of W Base RD
RouteCounty Highway 0
CountyGibson County
StateIndiana
Coordinates38.34259, -87.72795
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length62 ft (18.8 m)
Longest span60 ft (18.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2022)
Projected traffic60 by 2042
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 850 W over Blair Ditch built?

It was built in 2012, making it 13 years old in 2025.

What condition is CR 850 W over Blair Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does CR 850 W over Blair Ditch carry?

About 40 vehicles per day (2022 count), of which roughly 50% are trucks.

How long is CR 850 W over Blair Ditch?

The structure is 62 ft (18.8 m) long with a longest span of 60 ft (18.4 m) and a deck 24 ft wide.

Who owns CR 850 W over Blair Ditch?

It is owned by the County Highway Agency.