US Bridges

S.W. 45th. St. 186 over Trib. S. Br. Shunganunga

Fair

Shawnee County, Kansas · South Edge of Topeka · Structure no. 000890993804400

Built
1960
65 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
1,285
2024 count
Owner
County
County Highway Agency

About this bridge

S.W. 45th. St. 186 over Trib. S. Br. Shunganunga is a prestressed concrete tee beam carrying S.W. 45th. St. 186 over Trib. S. Br. Shunganunga in Shawnee County, Kansas. It was built in 1960, so it is 65 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 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 1,285 vehicles a day, roughly 1% of them trucks, projected to reach 1,600 by 2040. The structure is 30 ft (9.1 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS.W. 45th. St. 186
CrossesTrib. S. Br. Shunganunga
LocationSouth Edge of Topeka
RouteCounty Highway 0
CountyShawnee County
StateKansas
Coordinates38.98599, -95.71149
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.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic1,285 (2024)
Projected traffic1,600 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$290,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.W. 45th. St. 186 over Trib. S. Br. Shunganunga built?

It was built in 1960, making it 65 years old in 2025.

What condition is S.W. 45th. St. 186 over Trib. S. Br. Shunganunga 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 August 2024.

How much traffic does S.W. 45th. St. 186 over Trib. S. Br. Shunganunga carry?

About 1,285 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is S.W. 45th. St. 186 over Trib. S. Br. Shunganunga?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 25 ft wide.

Who owns S.W. 45th. St. 186 over Trib. S. Br. Shunganunga?

It is owned by the County Highway Agency.