FHWA NBI 2024 Inspection record Public-domain dataset

IRRA LOCAL R-324

Carrying IRRA LOCAL R-324 over MUD CREEK

1.7N 1.0E OF NETAWAKA, Jackson, Kansas

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
18 t Inventory load rating

Bridge Snapshot: IRRA LOCAL R-324

The IRRA LOCAL R-324 bridge in Jackson, Kansas carries IRRA LOCAL R-324 over MUD CREEK. It was built in 1930, making it 96 years old today. The structure is built primarily of steel and spans 1 section, stretching 28.2 meters (93 feet) end to end. Daily traffic averages 45 vehicles, placing it in the lower-traffic tier of Kansas bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 4/9, superstructure at 5/9, substructure at 5/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 18.1 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How IRRA LOCAL R-324 compares

▼ 11.0
Load rating vs Kansas average (29.1 t)
Bottom 23%
Lower load rating than 77% of Kansas bridges
242
Bridges in Jackson · 17 in Poor condition
IRRA LOCAL R-324 18.1 t
Kansas average 29.1 t

Live comparison across Kansas.

Historical Sufficiency Rating

PlainBridge-computed
52.4 / 100 - historical 50–79.9 band
Structural adequacy /55
27.4
Serviceability /30
18.0
Essentiality /15
15.0
Special reductions
−8.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Deck
4/9
Poor (1–4)
Superstructure
5/9
Fair (5–6)
Substructure
5/9
Fair (5–6)
Inventory Load Rating
18.1 t
NBI inventory level (metric tons)
Overall Condition
Poor

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1930
Material
Steel
Number of Spans
1
Structure Length
28.2 m (93 ft)
Deck Width
6.1 m (20 ft)
Owner
County Highway Agency
Avg Daily Traffic
45 vehicles/day
Structure Number
000430993003504

Condition Analysis

  • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
  • At 5/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
  • The substructure (piers and abutments) is in fair condition (5/9), with minor deterioration that may require routine maintenance.

How to read this record

IRRA LOCAL R-324 is in the federal Poor condition category. That is a component-based result, not a closure order.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
  • Compare IRRA LOCAL R-324 against other structures in Jackson and across Kansas. Kansas bridges
  • Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge

Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.

Frequently Asked Questions

What do the condition ratings mean for IRRA LOCAL R-324?

IRRA LOCAL R-324 in Jackson, Kansas has a deck rating of 4/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.

How often is IRRA LOCAL R-324 inspected?

IRRA LOCAL R-324's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 45 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. IRRA LOCAL R-324 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for IRRA LOCAL R-324?

IRRA LOCAL R-324 has an NBI inventory load rating of 18.1 metric tons.

Who is responsible for maintaining IRRA LOCAL R-324?

IRRA LOCAL R-324 is owned and maintained by County Highway Agency.

How old is IRRA LOCAL R-324 and does age affect safety?

IRRA LOCAL R-324 was built in 1930, making it 96 years old.

Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.