US Bridges

Vinton School Road over Threemile Creek

Fair

Riley County, Kansas · 923-336 · Structure no. DAPFORRIL000925

Built
1992
33 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
136 ft
3 main spans
Daily traffic
100
2019 count
Owner
Federal
Army

About this bridge

Vinton School Road over Threemile Creek is a concrete continuous slab carrying Vinton School Road over Threemile Creek in Riley County, Kansas. It was built in 1992, so it is 33 years old, younger 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.

It carries about 100 vehicles a day, roughly 20% of them trucks, projected to reach 100 by 2044. The structure is 136 ft (41.5 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesVinton School Road
CrossesThreemile Creek
Location923-336
CountyRiley County
StateKansas
Coordinates39.13222, -96.77152
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span54 ft (16.5 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic100 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$12,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vinton School Road over Threemile Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Vinton School Road over Threemile 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 Vinton School Road over Threemile Creek carry?

About 100 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is Vinton School Road over Threemile Creek?

The structure is 136 ft (41.5 m) long with a longest span of 54 ft (16.5 m) and a deck 46 ft wide.

Who owns Vinton School Road over Threemile Creek?

It is owned by the Army.