CSAH 12
Carrying CSAH 12 over S BR BUFFALO RIVER
1.7 MI W OF JCT CSAH 17, Clay, Minnesota
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: CSAH 12
The CSAH 12 bridge in Clay, Minnesota carries CSAH 12 over S BR BUFFALO RIVER. It was built in 1996, making it 30 years old today. The structure is built primarily of prestressed concrete and spans 5 sections, stretching 69.0 meters (226 feet) end to end. Daily traffic averages 420 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 a deck rating of 8/9, superstructure at 8/9, substructure at 8/9. 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 42.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How CSAH 12 compares
Live comparison across Minnesota.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1996
- Material
- Prestressed Concrete
- Number of Spans
- 5
- Structure Length
- 69.0 m (226 ft)
- Deck Width
- 12.8 m (42 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 420 vehicles/day
- Structure Number
- 14526
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (8/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates good at 8/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether CSAH 12 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 12 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 CSAH 12?
CSAH 12 in Clay, Minnesota has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is CSAH 12 inspected?
CSAH 12'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 420 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CSAH 12 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 12?
CSAH 12 has an NBI inventory load rating of 42.0 metric tons.
Who is responsible for maintaining CSAH 12?
CSAH 12 is owned and maintained by County Highway Agency.
How old is CSAH 12 and does age affect safety?
CSAH 12 was built in 1996, making it 30 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.
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.