US Bridges

310 Ave (south) over Trib. to Saline River

PoorPosted for load

Graham County, Kansas · 3.5E 12.1S of Hill City · Structure no. 000330559004121

Built
1955
70 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
41 ft
2 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

310 Ave (south) over Trib. to Saline River is a steel continuous stringer/multi-beam or girder carrying 310 Ave (south) over Trib. to Saline River in Graham County, Kansas. It was built in 1955, so it is 70 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, projected to reach 40 by 2044. The structure is 41 ft (12.5 m) long and 20 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
Carries310 Ave (south)
CrossesTrib. to Saline River
Location3.5E 12.1S of Hill City
RouteCounty Highway 0
CountyGraham County
StateKansas
Coordinates39.1892, -99.77304
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.9 US tons
Inventory rating21.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans2
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span20 ft (6 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic40 (2020)
Projected traffic40 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$44,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 310 Ave (south) over Trib. to Saline River built?

It was built in 1955, making it 70 years old in 2025.

What condition is 310 Ave (south) over Trib. to Saline River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does 310 Ave (south) over Trib. to Saline River carry?

About 40 vehicles per day (2020 count).

How long is 310 Ave (south) over Trib. to Saline River?

The structure is 41 ft (12.5 m) long with a longest span of 20 ft (6 m) and a deck 20 ft wide.

Who owns 310 Ave (south) over Trib. to Saline River?

It is owned by the County Highway Agency.