US Bridges

310th RD over Unnamed Stream

FairPosted for load

Lincoln County, Kansas · 2.1S 5.7E of Barnard · Structure no. 000530757004164

Built
1940
85 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

310th RD over Unnamed Stream is a steel stringer/multi-beam or girder carrying 310th RD over Unnamed Stream in Lincoln 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 40 vehicles a day, roughly 5% of them trucks, projected to reach 50 by 2044. The structure is 24 ft (7.3 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
Carries310th RD
CrossesUnnamed Stream
Location2.1S 5.7E of Barnard
RouteCounty Highway 7203
CountyLincoln County
StateKansas
Coordinates39.15806, -97.92944
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating14.7 US tons
Inventory rating8.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2022)
Projected traffic50 by 2044
Trucks5%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 310th RD over Unnamed Stream built?

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

What condition is 310th RD over Unnamed Stream 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 310th RD over Unnamed Stream carry?

About 40 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is 310th RD over Unnamed Stream?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 22 ft wide.

Who owns 310th RD over Unnamed Stream?

It is owned by the County Highway Agency.