US Bridges

US40 HWY over N Fk Smoky Hill River

PoorPosted for load

Logan County, Kansas · 8.46MI NE Wallace Coln · Structure no. 999904000550051

Built
1957
68 years old
Condition
Poor
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
470 ft
10 main spans
Daily traffic
1,056
2023 count
Owner
State
State Highway Agency

About this bridge

US40 HWY over N Fk Smoky Hill River is a concrete continuous tee beam carrying US40 HWY over N Fk Smoky Hill River in Logan County, Kansas. It was built in 1957, so it is 68 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 1,056 vehicles a day, roughly 24% of them trucks, projected to reach 1,697 by 2044. The structure is 470 ft (143.4 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS40 HWY
CrossesN Fk Smoky Hill River
Location8.46MI NE Wallace Coln
RouteU.S. Route 40
CountyLogan County
StateKansas
Coordinates39.01778, -101.34778
Functional classRural Minor Arterial

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
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length470 ft (143.4 m)
Longest span63 ft (19.2 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,056 (2023)
Projected traffic1,697 by 2044
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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 US40 HWY over N Fk Smoky Hill River built?

It was built in 1957, making it 68 years old in 2025.

What condition is US40 HWY over N Fk Smoky Hill 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 April 2024.

How much traffic does US40 HWY over N Fk Smoky Hill River carry?

About 1,056 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is US40 HWY over N Fk Smoky Hill River?

The structure is 470 ft (143.4 m) long with a longest span of 63 ft (19.2 m) and a deck 33 ft wide.

Who owns US40 HWY over N Fk Smoky Hill River?

It is owned by the State Highway Agency.