FHWA NBI 2024 Inspection record Public-domain dataset

SR 146

Carrying SR 146 over SLOAN WASH

NEAR SLOAN, Clark, Nevada

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
43 t Inventory load rating

Bridge Snapshot: SR 146

The SR 146 bridge in Clark, Nevada carries SR 146 over SLOAN WASH. It was built in 1961, making it 65 years old today. The structure is built primarily of concrete and spans 4 sections, stretching 18.0 meters (59 feet) end to end. Daily traffic averages 33,500 vehicles, placing it in the heavily-trafficked tier of Nevada bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 43.4 metric tons.

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

How SR 146 compares

▼ 3.2
Load rating vs Nevada average (46.6 t)
Top 44%
Higher load rating than 56% of Nevada bridges
1,175
Bridges in Clark · 2 in Poor condition
SR 146 43.4 t
Nevada average 46.6 t

Live comparison across Nevada.

Historical Sufficiency Rating

PlainBridge-computed
73.6 / 100 - historical 50–79.9 band
Structural adequacy /55
55.0
Serviceability /30
15.0
Essentiality /15
3.6
Special reductions
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 How the historical reference is calculated.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
43.4 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1961
Material
Concrete
Number of Spans
4
Structure Length
18.0 m (59 ft)
Owner
State Highway Agency
Avg Daily Traffic
33,500 vehicles/day
Structure Number
B 673

How to read this record

This page shows what the last federal inspection recorded, not whether SR 146 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 SR 146 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 SR 146?

SR 146 in Clark, Nevada on the FHWA's 0–9 scale.

How often is SR 146 inspected?

SR 146'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 33,500 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. SR 146 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 SR 146?

SR 146 has an NBI inventory load rating of 43.4 metric tons.

Who is responsible for maintaining SR 146?

SR 146 is owned and maintained by State Highway Agency.

How old is SR 146 and does age affect safety?

SR 146 was built in 1961, making it 65 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.