US Bridges

20th Rd. over Sante Fe Slough

Fair

Rice County, Kansas · 2.3N 4.5E of Sterling · Structure no. 000800735005423

Built
1991
34 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
85
2021 count
Owner
County
County Highway Agency

About this bridge

20th Rd. over Sante Fe Slough is a concrete continuous slab carrying 20th Rd. over Sante Fe Slough in Rice County, Kansas. It was built in 1991, so it is 34 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 85 vehicles a day, roughly 5% of them trucks, projected to reach 100 by 2044. The structure is 102 ft (31.2 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries20th Rd.
CrossesSante Fe Slough
Location2.3N 4.5E of Sterling
RouteCounty Highway 8009
CountyRice County
StateKansas
Coordinates38.24269, -98.12453
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating46.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.2 m)
Longest span40 ft (12.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic85 (2021)
Projected traffic100 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 20th Rd. over Sante Fe Slough built?

It was built in 1991, making it 34 years old in 2025.

What condition is 20th Rd. over Sante Fe Slough 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 20th Rd. over Sante Fe Slough carry?

About 85 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 20th Rd. over Sante Fe Slough?

The structure is 102 ft (31.2 m) long with a longest span of 40 ft (12.1 m) and a deck 30 ft wide.

Who owns 20th Rd. over Sante Fe Slough?

It is owned by the County Highway Agency.