US Bridges

Lackman Rd. over Little Mill Creek

Good

Johnson County, Kansas · 0.04S of Midland Drive · Structure no. 426350462701004

Built
1990
35 years old
Condition
Good
inspected March 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
8,015
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lackman Rd. over Little Mill Creek is a prestressed concrete continuous tee beam carrying Lackman Rd. over Little Mill Creek in Johnson County, Kansas. It was built in 1990, so it is 35 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 8,015 vehicles a day, roughly 6% of them trucks, projected to reach 9,600 by 2044. The structure is 130 ft (39.6 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLackman Rd.
CrossesLittle Mill Creek
Location0.04S of Midland Drive
RouteCity Street 2701
StateKansas
Coordinates38.99786, -94.76117
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span50 ft (15.2 m)
Deck width60 ft (18.3 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic8,015 (2017)
Projected traffic9,600 by 2044
Trucks6%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Lackman Rd. over Little Mill Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Lackman Rd. over Little Mill Creek 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 March 2024.

How much traffic does Lackman Rd. over Little Mill Creek carry?

About 8,015 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is Lackman Rd. over Little Mill Creek?

The structure is 130 ft (39.6 m) long with a longest span of 50 ft (15.2 m) and a deck 60 ft wide.

Who owns Lackman Rd. over Little Mill Creek?

It is owned by the City or Municipal Highway Agency.