US Bridges

ST-91 Evans Road over Trib. to Tonganoxie Ck.

Poor

Leavenworth County, Kansas · 1.2E of Tonganoxie · Structure no. 000000000520400

Built
1986
39 years old
Condition
Poor
inspected August 2024
Type
Slab
Concrete Continuous
Length
71 ft
3 main spans
Daily traffic
1,860
2021 count
Owner
County
County Highway Agency

About this bridge

ST-91 Evans Road over Trib. to Tonganoxie Ck. is a concrete continuous slab carrying ST-91 Evans Road over Trib. to Tonganoxie Ck. in Leavenworth County, Kansas. It was built in 1986, so it is 39 years old, younger 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.

It carries about 1,860 vehicles a day, roughly 11% of them trucks, projected to reach 1,200 by 2042. The structure is 71 ft (21.6 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesST-91 Evans Road
CrossesTrib. to Tonganoxie Ck.
Location1.2E of Tonganoxie
RouteCounty Highway 1841
CountyLeavenworth County
StateKansas
Coordinates39.10184, -95.04896
Functional classRural Major Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span28 ft (8.5 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic1,860 (2021)
Projected traffic1,200 by 2042
Trucks11%
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

OwnerCounty Highway Agency
Maintained byCounty 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 ST-91 Evans Road over Trib. to Tonganoxie Ck. built?

It was built in 1986, making it 39 years old in 2025.

What condition is ST-91 Evans Road over Trib. to Tonganoxie Ck. 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 August 2024.

How much traffic does ST-91 Evans Road over Trib. to Tonganoxie Ck. carry?

About 1,860 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is ST-91 Evans Road over Trib. to Tonganoxie Ck.?

The structure is 71 ft (21.6 m) long with a longest span of 28 ft (8.5 m) and a deck 36 ft wide.

Who owns ST-91 Evans Road over Trib. to Tonganoxie Ck.?

It is owned by the County Highway Agency.