FHWA NBI 2024 Inspection record Public-domain dataset

CSAH 20

Carrying CSAH 20 over BEAVER CREEK

2.9 MI W;S OF JCT TH 64, Cass, Minnesota

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
32 t Inventory load rating

Bridge Snapshot: CSAH 20

The CSAH 20 bridge in Cass, Minnesota carries CSAH 20 over BEAVER CREEK. It was built in 1964, making it 62 years old today. The structure is built primarily of steel and spans 2 sections, stretching 7.6 meters (25 feet) end to end. Daily traffic averages 255 vehicles, placing it in the lower-traffic tier of Minnesota bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 32.4 metric tons.

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

How CSAH 20 compares

▼ 3.3
Load rating vs Minnesota average (35.7 t)
Bottom 24%
Lower load rating than 76% of Minnesota bridges
80
Bridges in Cass · 3 in Poor condition
CSAH 20 32.4 t
Minnesota average 35.7 t

Live comparison across Minnesota.

Historical Sufficiency Rating

PlainBridge-computed
99.9 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
Essentiality /15
14.9
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 How the historical reference is calculated.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
7/9
Good (7–9)
Inventory Load Rating
32.4 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1964
Material
Steel
Number of Spans
2
Structure Length
7.6 m (25 ft)
Owner
County Highway Agency
Avg Daily Traffic
255 vehicles/day
Structure Number
92856

How to read this record

This page shows what the last federal inspection recorded, not whether CSAH 20 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 CSAH 20 against other structures in Cass and across Minnesota. Minnesota 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 CSAH 20?

CSAH 20 in Cass, Minnesota on the FHWA's 0–9 scale.

How often is CSAH 20 inspected?

CSAH 20'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 255 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. CSAH 20 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 CSAH 20?

CSAH 20 has an NBI inventory load rating of 32.4 metric tons.

Who is responsible for maintaining CSAH 20?

CSAH 20 is owned and maintained by County Highway Agency.

How old is CSAH 20 and does age affect safety?

CSAH 20 was built in 1964, making it 62 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.