FHWA NBI 2024 Inspection record Public-domain dataset

TOPAZ ST

Carrying TOPAZ ST over DUCK CRK

SE LAS VEGAS, Clark, Nevada

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
20 t Inventory load rating

Bridge Snapshot: TOPAZ ST

The TOPAZ ST bridge in Clark, Nevada carries TOPAZ ST over DUCK CRK. It was built in 2004, making it 22 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 19.7 meters (65 feet) end to end. Daily traffic averages 1,000 vehicles, placing it in the lower-traffic tier of Nevada 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 19.6 metric tons.

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

How TOPAZ ST compares

▼ 27.0
Load rating vs Nevada average (46.6 t)
Bottom 1%
Lower load rating than 99% of Nevada bridges
1,175
Bridges in Clark · 2 in Poor condition
TOPAZ ST 19.6 t
Nevada average 46.6 t

Live comparison across Nevada.

Historical Sufficiency Rating

PlainBridge-computed
82.0 / 100 - historical 80–100 band
Structural adequacy /55
40.1
Serviceability /30
29.0
Essentiality /15
14.9
Special reductions
−2.0

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 How the historical reference is calculated.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
19.6 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
2004
Material
Concrete
Number of Spans
2
Structure Length
19.7 m (65 ft)
Deck Width
18.9 m (62 ft)
Owner
County Highway Agency
Avg Daily Traffic
1,000 vehicles/day
Structure Number
B2837

How to read this record

This page shows what the last federal inspection recorded, not whether TOPAZ ST 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 TOPAZ ST against other structures in Clark and across Nevada. Nevada 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 TOPAZ ST?

TOPAZ ST in Clark, Nevada on the FHWA's 0–9 scale.

How often is TOPAZ ST inspected?

TOPAZ ST'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 1,000 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. TOPAZ ST 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 TOPAZ ST?

TOPAZ ST has an NBI inventory load rating of 19.6 metric tons.

Who is responsible for maintaining TOPAZ ST?

TOPAZ ST is owned and maintained by County Highway Agency.

How old is TOPAZ ST and does age affect safety?

TOPAZ ST was built in 2004, making it 22 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.