FHWA NBI 2024 Inspection record Public-domain dataset

22730 363rd Avenue

Carrying 22730 363rd Avenue over Trib. to Platte Creek

1.3S & 4.0W of Platte, Charles Mix, South Dakota

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
90 t Inventory load rating

Bridge Snapshot: 22730 363rd Avenue

The 22730 363rd Avenue bridge in Charles Mix, South Dakota carries 22730 363rd Avenue over Trib. to Platte Creek. It was built in 2018, making it 8 years old today. The structure is built primarily of aluminum/iron and spans 1 section, stretching 9.6 meters (31 feet) end to end. Daily traffic averages 48 vehicles, placing it in the lower-traffic tier of South Dakota bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 89.8 metric tons.

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

How 22730 363rd Avenue compares

▲ 57.3
Load rating vs South Dakota average (32.5 t)
Top 4%
Higher load rating than 96% of South Dakota bridges
103
Bridges in Charles Mix · 24 in Poor condition
22730 363rd Avenue 89.8 t
South Dakota average 32.5 t

Live comparison across South Dakota.

Historical Sufficiency Rating

PlainBridge-computed
100.0 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
Essentiality /15
15.0
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 How the historical reference is calculated.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
8/9
Good (7–9)
Inventory Load Rating
89.8 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2018
Material
Aluminum/Iron
Number of Spans
1
Structure Length
9.6 m (31 ft)
Owner
County Highway Agency
Avg Daily Traffic
48 vehicles/day
Structure Number
000000012190093

How to read this record

This page shows what the last federal inspection recorded, not whether 22730 363rd Avenue 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 22730 363rd Avenue against other structures in Charles Mix and across South Dakota. South Dakota 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 22730 363rd Avenue?

22730 363rd Avenue in Charles Mix, South Dakota on the FHWA's 0–9 scale.

How often is 22730 363rd Avenue inspected?

22730 363rd Avenue'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 48 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. 22730 363rd Avenue 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 22730 363rd Avenue?

22730 363rd Avenue has an NBI inventory load rating of 89.8 metric tons.

Who is responsible for maintaining 22730 363rd Avenue?

22730 363rd Avenue is owned and maintained by County Highway Agency.

How old is 22730 363rd Avenue and does age affect safety?

22730 363rd Avenue was built in 2018, making it 8 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.