US Bridges

Rs 1715 20th RD over S. Branch Spillman Creek

FairPosted for load

Lincoln County, Kansas · 6.0W 1.0N of Ash Grove · Structure no. 000000000530470

Built
1935
90 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

Rs 1715 20th RD over S. Branch Spillman Creek is a concrete continuous slab carrying Rs 1715 20th RD over S. Branch Spillman Creek in Lincoln County, Kansas. It was built in 1935, so it is 90 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. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 30 by 2044. The structure is 25 ft (7.6 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesRs 1715 20th RD
CrossesS. Branch Spillman Creek
Location6.0W 1.0N of Ash Grove
RouteCounty Highway 1715
CountyLincoln County
StateKansas
Coordinates39.16483, -98.47116
Functional classRural Major 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating10 US tons
Inventory rating10 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span11 ft (3.5 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic25 (2022)
Projected traffic30 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 1715 20th RD over S. Branch Spillman Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Rs 1715 20th RD over S. Branch Spillman 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 October 2024.

How much traffic does Rs 1715 20th RD over S. Branch Spillman Creek carry?

About 25 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Rs 1715 20th RD over S. Branch Spillman Creek?

The structure is 25 ft (7.6 m) long with a longest span of 11 ft (3.5 m) and a deck 27 ft wide.

Who owns Rs 1715 20th RD over S. Branch Spillman Creek?

It is owned by the County Highway Agency.