US Bridges

8th St. over I70 HWY Nl-Sl

Fair

Shawnee County, Kansas · 1.08 MI E Topeka Ave · Structure no. 999907000890301

Built
1964
61 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
203 ft
4 main spans
Daily traffic
5,590
2023 count
Owner
State
State Highway Agency

About this bridge

8th St. over I70 HWY Nl-Sl is a concrete continuous slab carrying 8th St. over I70 HWY Nl-Sl in Shawnee County, Kansas. It was built in 1964, so it is 61 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 5,590 vehicles a day, projected to reach 6,687 by 2044. The structure is 203 ft (61.9 m) long and 90 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries8th St.
CrossesI70 HWY Nl-Sl
Location1.08 MI E Topeka Ave
RouteCity Street 5214
CountyShawnee County
StateKansas
Coordinates39.04778, -95.67056
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating85.8 US tons
Inventory rating51.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length203 ft (61.9 m)
Longest span56 ft (17.1 m)
Deck width90 ft (27.5 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,590 (2023)
Projected traffic6,687 by 2044
Trucks0%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 8th St. over I70 HWY Nl-Sl built?

It was built in 1964, making it 61 years old in 2025.

What condition is 8th St. over I70 HWY Nl-Sl 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 June 2024.

How much traffic does 8th St. over I70 HWY Nl-Sl carry?

About 5,590 vehicles per day (2023 count).

How long is 8th St. over I70 HWY Nl-Sl?

The structure is 203 ft (61.9 m) long with a longest span of 56 ft (17.1 m) and a deck 90 ft wide.

Who owns 8th St. over I70 HWY Nl-Sl?

It is owned by the State Highway Agency.