FHWA NBI 2024 Inspection record Public-domain dataset

SR338 SWEETWATER

Carrying SR338 SWEETWATER over SARONI CANAL

SE of WELLINGTON, Lyon, Nevada

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
23 t Inventory load rating

Bridge Snapshot: SR338 SWEETWATER

The SR338 SWEETWATER bridge in Lyon, Nevada carries SR338 SWEETWATER over SARONI CANAL. It was built in 1946, making it 80 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 7.0 meters (23 feet) end to end. Daily traffic averages 480 vehicles, placing it in the lower-traffic tier of Nevada bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show culvert 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 23.1 metric tons.

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

How SR338 SWEETWATER compares

▼ 23.5
Load rating vs Nevada average (46.6 t)
Bottom 11%
Lower load rating than 89% of Nevada bridges
54
Bridges in Lyon · 4 in Poor condition
SR338 SWEETWATER 23.1 t
Nevada average 46.6 t

Live comparison across Nevada.

Historical Sufficiency Rating

PlainBridge-computed
87.5 / 100 - historical 80–100 band
Structural adequacy /55
45.8
Serviceability /30
30.0
Essentiality /15
14.8
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 How the historical reference is calculated.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
7/9
Good (7–9)
Inventory Load Rating
23.1 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1946
Material
Concrete
Number of Spans
2
Structure Length
7.0 m (23 ft)
Owner
State Highway Agency
Avg Daily Traffic
480 vehicles/day
Structure Number
B 462

How to read this record

This page shows what the last federal inspection recorded, not whether SR338 SWEETWATER 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 SR338 SWEETWATER against other structures in Lyon 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 SR338 SWEETWATER?

SR338 SWEETWATER in Lyon, Nevada on the FHWA's 0–9 scale.

How often is SR338 SWEETWATER inspected?

SR338 SWEETWATER'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 480 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. SR338 SWEETWATER 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 SR338 SWEETWATER?

SR338 SWEETWATER has an NBI inventory load rating of 23.1 metric tons.

Who is responsible for maintaining SR338 SWEETWATER?

SR338 SWEETWATER is owned and maintained by State Highway Agency.

How old is SR338 SWEETWATER and does age affect safety?

SR338 SWEETWATER was built in 1946, making it 80 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.