US Bridges

121st. Terr. #52 over Indian Creek Trib.

Fair

Johnson County, Kansas · 0.1E of Blackbob · Structure no. 521200460000052

Built
1994
31 years old
Condition
Fair
inspected May 2023
Type
Culvert
Steel
Length
25 ft
3 main spans
Daily traffic
500
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

121st. Terr. #52 over Indian Creek Trib. is a steel culvert carrying 121st. Terr. #52 over Indian Creek Trib. in Johnson County, Kansas. It was built in 1994, so it is 31 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 720 by 2043. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
Carries121st. Terr. #52
CrossesIndian Creek Trib.
Location0.1E of Blackbob
RouteCity Street 0
CountyJohnson County
StateKansas
Coordinates38.90816, -94.76056
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic500 (2011)
Projected traffic720 by 2043
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 121st. Terr. #52 over Indian Creek Trib. built?

It was built in 1994, making it 31 years old in 2025.

What condition is 121st. Terr. #52 over Indian Creek Trib. 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 May 2023.

How much traffic does 121st. Terr. #52 over Indian Creek Trib. carry?

About 500 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is 121st. Terr. #52 over Indian Creek Trib.?

The structure is 25 ft (7.7 m) long with a longest span of 7 ft (2.1 m).

Who owns 121st. Terr. #52 over Indian Creek Trib.?

It is owned by the City or Municipal Highway Agency.