US Bridges

15th Street over Rock Creek

Fair

Franklin County, Kansas · 0.58E of US59 on 15th St. · Structure no. 421850304304020

Built
1968
57 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
3,295
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

15th Street over Rock Creek is a concrete continuous slab carrying 15th Street over Rock Creek in Franklin County, Kansas. It was built in 1968, so it is 57 years old, older 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 3,295 vehicles a day, roughly 1% of them trucks, projected to reach 3,954 by 2044. The structure is 122 ft (37.3 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries15th Street
CrossesRock Creek
Location0.58E of US59 on 15th St.
RouteCity Street 4304
CountyFranklin County
StateKansas
Coordinates38.59389, -95.25792
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length122 ft (37.3 m)
Longest span48 ft (14.6 m)
Deck width46 ft (14 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic3,295 (2014)
Projected traffic3,954 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$540,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 15th Street over Rock Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is 15th Street over Rock 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 May 2024.

How much traffic does 15th Street over Rock Creek carry?

About 3,295 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is 15th Street over Rock Creek?

The structure is 122 ft (37.3 m) long with a longest span of 48 ft (14.6 m) and a deck 46 ft wide.

Who owns 15th Street over Rock Creek?

It is owned by the City or Municipal Highway Agency.