US Bridges

CR 1100E over Black Creek-Prairie Br

Fair

Grant County, Indiana · 01.95 MI N of SR 18 · Structure no. 2700027

Built
1940
85 years old, rebuilt 1987
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
110
2021 count
Owner
County
County Highway Agency

About this bridge

CR 1100E over Black Creek-Prairie Br is a prestressed concrete box beam or girders - multiple carrying CR 1100E over Black Creek-Prairie Br in Grant County, Indiana. It was built in 1940 and reconstructed in 1987, so it is 85 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 110 vehicles a day, roughly 5% of them trucks, projected to reach 170 by 2041. The structure is 24 ft (7.2 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 1100E
CrossesBlack Creek-Prairie Br
Location01.95 MI N of SR 18
RouteCounty Highway 71
CountyGrant County
StateIndiana
Coordinates40.58009, -85.46631
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating51.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.2 m)
Longest span21 ft (6.5 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2021)
Projected traffic170 by 2041
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 1100E over Black Creek-Prairie Br built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1987.

What condition is CR 1100E over Black Creek-Prairie Br 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 2023.

How much traffic does CR 1100E over Black Creek-Prairie Br carry?

About 110 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is CR 1100E over Black Creek-Prairie Br?

The structure is 24 ft (7.2 m) long with a longest span of 21 ft (6.5 m) and a deck 25 ft wide.

Who owns CR 1100E over Black Creek-Prairie Br?

It is owned by the County Highway Agency.