US Bridges

Knoop Johnston over CSX Railroad

Good

Shelby County, Ohio · 0.1 M. S. of SR 29 · Structure no. 7553846

Built
2004
21 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
166 ft
3 main spans
Daily traffic
185
2020 count
Owner
County
County Highway Agency

About this bridge

Knoop Johnston over CSX Railroad is a prestressed concrete box beam or girders - multiple carrying Knoop Johnston over CSX Railroad in Shelby County, Ohio. It was built in 2004, so it is 21 years old, younger than the Ohio average of 47.3 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 185 vehicles a day, roughly 7% of them trucks, projected to reach 318 by 2035. The structure is 166 ft (50.5 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesKnoop Johnston
CrossesCSX Railroad
Location0.1 M. S. of SR 29
RouteCounty Highway T0139
CountyShelby County
StateOhio
Coordinates40.28196, -84.11452
Functional classUrban Local

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.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating44.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length166 ft (50.5 m)
Longest span78 ft (23.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic185 (2020)
Projected traffic318 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Knoop Johnston over CSX Railroad built?

It was built in 2004, making it 21 years old in 2025.

What condition is Knoop Johnston over CSX Railroad 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 September 2024.

How much traffic does Knoop Johnston over CSX Railroad carry?

About 185 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Knoop Johnston over CSX Railroad?

The structure is 166 ft (50.5 m) long with a longest span of 78 ft (23.8 m) and a deck 31 ft wide.

Who owns Knoop Johnston over CSX Railroad?

It is owned by the County Highway Agency.