US Bridges

Irra Local R-324 over Mud Creek

Poor

Jackson County, Kansas · 1.7N 1.0E of Netawaka · Structure no. 000430993003504

Built
1930
95 years old
Condition
Poor
inspected October 2024
Type
Truss - Thru
Steel
Length
93 ft
1 main span
Daily traffic
45
2018 count
Owner
County
County Highway Agency

About this bridge

Irra Local R-324 over Mud Creek is a steel truss - thru carrying Irra Local R-324 over Mud Creek in Jackson County, Kansas. It was built in 1930, so it is 95 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 45 vehicles a day, projected to reach 45 by 2044. The structure is 93 ft (28.2 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIrra Local R-324
CrossesMud Creek
Location1.7N 1.0E of Netawaka
RouteCounty Highway 0
CountyJackson County
StateKansas
Coordinates39.63307, -95.71412
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
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.4 US tons
Inventory rating25.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length93 ft (28.2 m)
Longest span80 ft (24.3 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic45 (2018)
Projected traffic45 by 2044
Trucks0%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$375,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Irra Local R-324 over Mud Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Irra Local R-324 over Mud 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 October 2024.

How much traffic does Irra Local R-324 over Mud Creek carry?

About 45 vehicles per day (2018 count).

How long is Irra Local R-324 over Mud Creek?

The structure is 93 ft (28.2 m) long with a longest span of 80 ft (24.3 m) and a deck 20 ft wide.

Who owns Irra Local R-324 over Mud Creek?

It is owned by the County Highway Agency.