US Bridges

E Boston Mills RD over Shawnee Creek

Poor

Cherokee County, Kansas · 3.0N 1.1E of Riverton · Structure no. 000000000110660

Built
1942
83 years old
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
279 ft
4 main spans
Daily traffic
310
2019 count
Owner
County
County Highway Agency

About this bridge

E Boston Mills RD over Shawnee Creek is a steel continuous stringer/multi-beam or girder carrying E Boston Mills RD over Shawnee Creek in Cherokee County, Kansas. It was built in 1942, so it is 83 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.

It carries about 310 vehicles a day, roughly 10% of them trucks, projected to reach 370 by 2043. The structure is 279 ft (85 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesE Boston Mills RD
CrossesShawnee Creek
Location3.0N 1.1E of Riverton
RouteCounty Highway 2160
StateKansas
Coordinates37.11916, -94.68466
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length279 ft (85 m)
Longest span70 ft (21.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic310 (2019)
Projected traffic370 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$148,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was E Boston Mills RD over Shawnee Creek built?

It was built in 1942, making it 83 years old in 2025.

What condition is E Boston Mills RD over Shawnee Creek 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 September 2023.

How much traffic does E Boston Mills RD over Shawnee Creek carry?

About 310 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is E Boston Mills RD over Shawnee Creek?

The structure is 279 ft (85 m) long with a longest span of 70 ft (21.3 m) and a deck 26 ft wide.

Who owns E Boston Mills RD over Shawnee Creek?

It is owned by the County Highway Agency.