US Bridges

Rocklane Road over Leatherwood Creek

Fair

Johnson County, Indiana · 0.25 E of CR 600 E · Structure no. 4100073

Built
1977
48 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
2,957
2021 count
Owner
County
County Highway Agency

About this bridge

Rocklane Road over Leatherwood Creek is a prestressed concrete box beam or girders - multiple carrying Rocklane Road over Leatherwood Creek in Johnson County, Indiana. It was built in 1977, so it is 48 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 2,957 vehicles a day, roughly 11% of them trucks, projected to reach 6,742 by 2041. The structure is 40 ft (12.1 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRocklane Road
CrossesLeatherwood Creek
Location0.25 E of CR 600 E
RouteCounty Highway 0
CountyJohnson County
StateIndiana
Coordinates39.60358, -85.98483
Functional classRural Major 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 inspectionJune 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.4 US tons
Inventory rating29.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length40 ft (12.1 m)
Longest span37 ft (11.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,957 (2021)
Projected traffic6,742 by 2041
Trucks11%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rocklane Road over Leatherwood Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Rocklane Road over Leatherwood Creek 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 June 2024.

How much traffic does Rocklane Road over Leatherwood Creek carry?

About 2,957 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Rocklane Road over Leatherwood Creek?

The structure is 40 ft (12.1 m) long with a longest span of 37 ft (11.4 m) and a deck 28 ft wide.

Who owns Rocklane Road over Leatherwood Creek?

It is owned by the County Highway Agency.