TRAIL NORTH OF Z99
Carrying TRAIL NORTH OF Z99 over WILDCAT CREEK
888-496, Riley, Kansas
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: TRAIL NORTH OF Z99
The TRAIL NORTH OF Z99 bridge in Riley, Kansas carries TRAIL NORTH OF Z99 over WILDCAT CREEK. It was built in 1950, making it 76 years old today. The structure is built primarily of steel and spans 1 section, stretching 8.2 meters (27 feet) end to end. Daily traffic averages 5 vehicles, placing it in the lower-traffic tier of Kansas bridges. It is owned and maintained by NASA.
The latest FHWA inspection records show a deck rating of 0/9, superstructure at 5/9, substructure at 6/9. The weakest component sits in critical condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 6.3 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How TRAIL NORTH OF Z99 compares
Live comparison across Kansas.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1950
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 8.2 m (27 ft)
- Deck Width
- 6.2 m (20 ft)
- Owner
- NASA
- Avg Daily Traffic
- 5 vehicles/day
- Structure Number
- DAPFORRIL000908
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in critical condition (0/9), with severe deterioration requiring urgent attention.
- • 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) rates fair at 6/9, minor deterioration that routine maintenance should address.
How to read this record
TRAIL NORTH OF Z99 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 TRAIL NORTH OF Z99 against other structures in Riley 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 TRAIL NORTH OF Z99?
TRAIL NORTH OF Z99 in Riley, Kansas has a deck rating of 0/9, superstructure rating of 5/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is TRAIL NORTH OF Z99 inspected?
TRAIL NORTH OF Z99'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 5 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. TRAIL NORTH OF Z99 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 TRAIL NORTH OF Z99?
TRAIL NORTH OF Z99 has an NBI inventory load rating of 6.3 metric tons.
Who is responsible for maintaining TRAIL NORTH OF Z99?
TRAIL NORTH OF Z99 is owned and maintained by NASA.
How old is TRAIL NORTH OF Z99 and does age affect safety?
TRAIL NORTH OF Z99 was built in 1950, making it 76 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.
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.