FHWA NBI 2024 Inspection record Public-domain dataset

CON 6821

Carrying CON 6821 over CO DITCH #47 S

AT JCT 34TH ST S; I 94, Clay, Minnesota

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
41 t Inventory load rating

Bridge Snapshot: CON 6821

The CON 6821 bridge in Clay, Minnesota carries CON 6821 over CO DITCH #47 S. It was built in 2010, making it 16 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 8.3 meters (27 feet) end to end. Daily traffic averages 1,452 vehicles, placing it in the moderately-trafficked tier of Minnesota 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 40.8 metric tons.

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

How CON 6821 compares

▲ 5.1
Load rating vs Minnesota average (35.7 t)
Top 22%
Higher load rating than 78% of Minnesota bridges
166
Bridges in Clay · 8 in Poor condition
CON 6821 40.8 t
Minnesota average 35.7 t

Live comparison across Minnesota.

Historical Sufficiency Rating

PlainBridge-computed
97.9 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
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 How the historical reference is calculated.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
40.8 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
2010
Material
Concrete
Number of Spans
2
Structure Length
8.3 m (27 ft)
Owner
State Highway Agency
Avg Daily Traffic
1,452 vehicles/day
Structure Number
14X07

How to read this record

This page shows what the last federal inspection recorded, not whether CON 6821 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 CON 6821 against other structures in Clay 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 CON 6821?

CON 6821 in Clay, Minnesota on the FHWA's 0–9 scale.

How often is CON 6821 inspected?

CON 6821'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 1,452 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. CON 6821 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 CON 6821?

CON 6821 has an NBI inventory load rating of 40.8 metric tons.

Who is responsible for maintaining CON 6821?

CON 6821 is owned and maintained by State Highway Agency.

How old is CON 6821 and does age affect safety?

CON 6821 was built in 2010, making it 16 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.