TRAIL Z81 & Z85
Carrying TRAIL Z81 & Z85 over TIMBER CREEK
765-510, Riley, Kansas
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: TRAIL Z81 & Z85
The TRAIL Z81 & Z85 bridge in Riley, Kansas carries TRAIL Z81 & Z85 over TIMBER CREEK. It was built in 1923, making it 103 years old today. The structure is built primarily of concrete and spans 1 section, stretching 10.1 meters (33 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 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 12.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How TRAIL Z81 & Z85 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 How the historical reference is calculated.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
- 1923
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 10.1 m (33 ft)
- Deck Width
- 6.2 m (20 ft)
- Owner
- NASA
- Avg Daily Traffic
- 5 vehicles/day
- Structure Number
- DAPFORRIL000901
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether TRAIL Z81 & Z85 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 TRAIL Z81 & Z85 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 Z81 & Z85?
TRAIL Z81 & Z85 in Riley, Kansas has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is TRAIL Z81 & Z85 inspected?
TRAIL Z81 & Z85'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 Z81 & Z85 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for TRAIL Z81 & Z85?
TRAIL Z81 & Z85 has an NBI inventory load rating of 12.6 metric tons.
Who is responsible for maintaining TRAIL Z81 & Z85?
TRAIL Z81 & Z85 is owned and maintained by NASA.
How old is TRAIL Z81 & Z85 and does age affect safety?
TRAIL Z81 & Z85 was built in 1923, making it 103 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.