US Bridges

30th RD(29.0-CC.7) over Trib. to Gilson Creek

FairPosted for load

Marshall County, Kansas · 1.7S 2.0E of Lillis · Structure no. 000580935003567

Built
1950
75 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
23 ft
1 main span
Daily traffic
10
2007 count
Owner
County
County Highway Agency

About this bridge

30th RD(29.0-CC.7) over Trib. to Gilson Creek is a wood or timber stringer/multi-beam or girder carrying 30th RD(29.0-CC.7) over Trib. to Gilson Creek in Marshall County, Kansas. It was built in 1950, so it is 75 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 10 vehicles a day, projected to reach 10 by 2043. The structure is 23 ft (7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries30th RD(29.0-CC.7)
CrossesTrib. to Gilson Creek
Location1.7S 2.0E of Lillis
RouteCounty Highway 0
CountyMarshall County
StateKansas
Coordinates39.58443, -96.25799
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating33.8 US tons
Inventory rating24.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2007)
Projected traffic10 by 2043
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$55,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 30th RD(29.0-CC.7) over Trib. to Gilson Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is 30th RD(29.0-CC.7) over Trib. to Gilson 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 May 2023.

How much traffic does 30th RD(29.0-CC.7) over Trib. to Gilson Creek carry?

About 10 vehicles per day (2007 count).

How long is 30th RD(29.0-CC.7) over Trib. to Gilson Creek?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.

Who owns 30th RD(29.0-CC.7) over Trib. to Gilson Creek?

It is owned by the County Highway Agency.