US Bridges

RD 145 963.2-524.5 over Neosho River

FairPosted for load

Lyon County, Kansas · 0.5W of Neosho Rapids · Structure no. 000000000560350

Built
1940
85 years old
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel Continuous
Length
473 ft
3 main spans
Daily traffic
152
2007 count
Owner
County
County Highway Agency

About this bridge

RD 145 963.2-524.5 over Neosho River is a steel continuous truss - thru carrying RD 145 963.2-524.5 over Neosho River in Lyon County, Kansas. It was built in 1940, so it is 85 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. Its operating status is: posted for load restriction.

It carries about 152 vehicles a day, roughly 10% of them trucks, projected to reach 165 by 2043. The structure is 473 ft (144.2 m) long and 26 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesRD 145 963.2-524.5
CrossesNeosho River
Location0.5W of Neosho Rapids
RouteCounty Highway 418
CountyLyon County
StateKansas
Coordinates38.36775, -96.00208
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length473 ft (144.2 m)
Longest span181 ft (55.3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic152 (2007)
Projected traffic165 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$719,000
NavigationNo navigation control on waterway

Frequently asked questions

When was RD 145 963.2-524.5 over Neosho River built?

It was built in 1940, making it 85 years old in 2025.

What condition is RD 145 963.2-524.5 over Neosho River 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 March 2023.

How much traffic does RD 145 963.2-524.5 over Neosho River carry?

About 152 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is RD 145 963.2-524.5 over Neosho River?

The structure is 473 ft (144.2 m) long with a longest span of 181 ft (55.3 m) and a deck 26 ft wide.

Who owns RD 145 963.2-524.5 over Neosho River?

It is owned by the County Highway Agency.