US Bridges

Rs 128 A.5-4.8F over Unnamed Waterway

Fair

Riley County, Kansas · 10.0W 4.8N of Randolph · Structure no. 000000000810010

Built
1972
53 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
70
2004 count
Owner
County
County Highway Agency

About this bridge

Rs 128 A.5-4.8F over Unnamed Waterway is a concrete culvert carrying Rs 128 A.5-4.8F over Unnamed Waterway in Riley County, Kansas. It was built in 1972, so it is 53 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 70 vehicles a day, projected to reach 75 by 2044. The structure is 25 ft (7.6 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRs 128 A.5-4.8F
CrossesUnnamed Waterway
Location10.0W 4.8N of Randolph
RouteCounty Highway 128
CountyRiley County
StateKansas
Coordinates39.49921, -96.9496
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.7 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width34 ft (10.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic70 (2004)
Projected traffic75 by 2044
Trucks0%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$120,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 128 A.5-4.8F over Unnamed Waterway built?

It was built in 1972, making it 53 years old in 2025.

What condition is Rs 128 A.5-4.8F over Unnamed Waterway 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 December 2024.

How much traffic does Rs 128 A.5-4.8F over Unnamed Waterway carry?

About 70 vehicles per day (2004 count).

How long is Rs 128 A.5-4.8F over Unnamed Waterway?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 34 ft wide.

Who owns Rs 128 A.5-4.8F over Unnamed Waterway?

It is owned by the County Highway Agency.