US Bridges

Jackson H.4-20.3 over Pottowatomie Ck

PoorPosted for load

Anderson County, Kansas · 1.4 N Jackson-Hwy 31 · Structure no. 000021029905309

Built
1920
105 years old
Condition
Poor
inspected January 2024
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
50
2014 count
Owner
County
County Highway Agency

About this bridge

Jackson H.4-20.3 over Pottowatomie Ck is a concrete culvert carrying Jackson H.4-20.3 over Pottowatomie Ck in Anderson County, Kansas. It was built in 1920, so it is 105 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 50 vehicles a day, roughly 30% of them trucks, projected to reach 60 by 2044. The structure is 25 ft (7.6 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesJackson H.4-20.3
CrossesPottowatomie Ck
Location1.4 N Jackson-Hwy 31
RouteCounty Highway 0
CountyAnderson County
StateKansas
Coordinates38.32097, -95.38121
Functional classRural Local

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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating6.1 US tons
Inventory rating4.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span7 ft (2.1 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2014)
Projected traffic60 by 2044
Trucks30%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of relocation of road
Estimated improvement cost$220,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jackson H.4-20.3 over Pottowatomie Ck built?

It was built in 1920, making it 105 years old in 2025.

What condition is Jackson H.4-20.3 over Pottowatomie 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 January 2024.

How much traffic does Jackson H.4-20.3 over Pottowatomie Ck carry?

About 50 vehicles per day (2014 count), of which roughly 30% are trucks.

How long is Jackson H.4-20.3 over Pottowatomie Ck?

The structure is 25 ft (7.6 m) long with a longest span of 7 ft (2.1 m) and a deck 21 ft wide.

Who owns Jackson H.4-20.3 over Pottowatomie Ck?

It is owned by the County Highway Agency.