FHWA NBI 2024 Inspection record Public-domain dataset

RS 302 NW 50TH AVE

Carrying RS 302 NW 50TH AVE over TRIB. TO RUSH CREEK

0.5N OF CRYSTAL SPRINGS, Harper, Kansas

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
16 t Inventory load rating

Bridge Snapshot: RS 302 NW 50TH AVE

The RS 302 NW 50TH AVE bridge in Harper, Kansas carries RS 302 NW 50TH AVE over TRIB. TO RUSH CREEK. It was built in 1935, making it 91 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 7.7 meters (25 feet) end to end. Daily traffic averages 80 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 culvert at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 16.2 metric tons.

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

How RS 302 NW 50TH AVE compares

▼ 12.9
Load rating vs Kansas average (29.1 t)
Bottom 17%
Lower load rating than 83% of Kansas bridges
355
Bridges in Harper · 36 in Poor condition
RS 302 NW 50TH AVE 16.2 t
Kansas average 29.1 t

Live comparison across Kansas.

Historical Sufficiency Rating

PlainBridge-computed
74.8 / 100 - historical 50–79.9 band
Structural adequacy /55
33.8
Serviceability /30
29.0
Essentiality /15
15.0
Special reductions
−3.0

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 How the historical reference is calculated.

Condition Ratings

Culvert
6/9
Fair (5–6)
Inventory Load Rating
16.2 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1935
Material
Concrete
Number of Spans
3
Structure Length
7.7 m (25 ft)
Deck Width
9.1 m (30 ft)
Owner
County Highway Agency
Avg Daily Traffic
80 vehicles/day
Structure Number
000000000390190

How to read this record

This page shows what the last federal inspection recorded, not whether RS 302 NW 50TH AVE is safe to cross today. Here is how to use it.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
  • Compare RS 302 NW 50TH AVE against other structures in Harper 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 RS 302 NW 50TH AVE?

RS 302 NW 50TH AVE in Harper, Kansas on the FHWA's 0–9 scale.

How often is RS 302 NW 50TH AVE inspected?

RS 302 NW 50TH AVE'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 80 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. RS 302 NW 50TH AVE is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for RS 302 NW 50TH AVE?

RS 302 NW 50TH AVE has an NBI inventory load rating of 16.2 metric tons.

Who is responsible for maintaining RS 302 NW 50TH AVE?

RS 302 NW 50TH AVE is owned and maintained by County Highway Agency.

How old is RS 302 NW 50TH AVE and does age affect safety?

RS 302 NW 50TH AVE was built in 1935, making it 91 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.