US Bridges

CR 300 South over Conns Creek

FairPosted for load

Shelby County, Indiana · 00.10 W of CR 725 E · Structure no. 7300036

Built
1920
105 years old
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
79 ft
1 main span
Daily traffic
100
2021 count
Owner
County
County Highway Agency

About this bridge

CR 300 South over Conns Creek is a concrete arch - deck carrying CR 300 South over Conns Creek in Shelby County, Indiana. It was built in 1920, so it is 105 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2041. The structure is 79 ft (24.2 m) long and 18 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCR 300 South
CrossesConns Creek
Location00.10 W of CR 725 E
RouteCounty Highway 178
CountyShelby County
StateIndiana
Coordinates39.4826, -85.6484
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating8.9 US tons
Inventory rating8.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length79 ft (24.2 m)
Longest span76 ft (23.1 m)
Deck width18 ft (5.6 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic150 by 2041
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 300 South over Conns Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is CR 300 South over Conns 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 November 2023.

How much traffic does CR 300 South over Conns Creek carry?

About 100 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is CR 300 South over Conns Creek?

The structure is 79 ft (24.2 m) long with a longest span of 76 ft (23.1 m) and a deck 18 ft wide.

Who owns CR 300 South over Conns Creek?

It is owned by the County Highway Agency.