US Bridges

Trail Z50 & Z53 over Branch of Farnum Creek

FairPosted for load

Riley County, Kansas · 836-383 · Structure no. DAPFORRIL000906

Built
1968
57 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
10
2021 count
Owner
Federal
Army

About this bridge

Trail Z50 & Z53 over Branch of Farnum Creek is a steel stringer/multi-beam or girder carrying Trail Z50 & Z53 over Branch of Farnum Creek in Riley County, Kansas. It was built in 1968, so it is 57 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 10 vehicles a day, roughly 20% of them trucks, projected to reach 10 by 2044. The structure is 33 ft (10.2 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTrail Z50 & Z53
CrossesBranch of Farnum Creek
Location836-383
CountyRiley County
StateKansas
Coordinates39.17567, -96.87458
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
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span31 ft (9.4 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2021)
Projected traffic10 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Trail Z50 & Z53 over Branch of Farnum Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Trail Z50 & Z53 over Branch of Farnum 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 July 2023.

How much traffic does Trail Z50 & Z53 over Branch of Farnum Creek carry?

About 10 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is Trail Z50 & Z53 over Branch of Farnum Creek?

The structure is 33 ft (10.2 m) long with a longest span of 31 ft (9.4 m) and a deck 23 ft wide.

Who owns Trail Z50 & Z53 over Branch of Farnum Creek?

It is owned by the Army.