US Bridges

U36 over Little Blue River

Good

Washington County, Kansas · 1.4 MI W U36/K148 JCT · Structure no. 999903601010501

Built
1999
26 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
624 ft
4 main spans
Daily traffic
2,452
2023 count
Owner
State
State Highway Agency

About this bridge

U36 over Little Blue River is a steel continuous stringer/multi-beam or girder carrying U36 over Little Blue River in Washington County, Kansas. It was built in 1999, so it is 26 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,452 vehicles a day, roughly 24% of them trucks, projected to reach 2,876 by 2044. The structure is 624 ft (190.1 m) long and 46 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesU36
CrossesLittle Blue River
Location1.4 MI W U36/K148 JCT
RouteU.S. Route 36
StateKansas
Coordinates39.83889, -96.88694
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

MaterialSteel Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length624 ft (190.1 m)
Longest span164 ft (50 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,452 (2023)
Projected traffic2,876 by 2044
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was U36 over Little Blue River built?

It was built in 1999, making it 26 years old in 2025.

What condition is U36 over Little Blue River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does U36 over Little Blue River carry?

About 2,452 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is U36 over Little Blue River?

The structure is 624 ft (190.1 m) long with a longest span of 164 ft (50 m) and a deck 46 ft wide.

Who owns U36 over Little Blue River?

It is owned by the State Highway Agency.