USH 53-STH 121-MAI
Carrying USH 53-STH 121-MAI over TREMPEALEAU RIVER
0.4M N JCT STH 121 TO W, Trempealeau, Wisconsin
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: USH 53-STH 121-MAI
The USH 53-STH 121-MAI bridge in Trempealeau, Wisconsin carries USH 53-STH 121-MAI over TREMPEALEAU RIVER. It was built in 1969, making it 57 years old today. It was last reconstructed in 2016, extending its service life. The structure is built primarily of prestressed concrete continuous and spans 3 sections, stretching 57.2 meters (188 feet) end to end. Daily traffic averages 6,100 vehicles, placing it in the moderately-trafficked tier of Wisconsin bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, substructure 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 25.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How USH 53-STH 121-MAI compares
Live comparison across Wisconsin.
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 How the historical reference is calculated.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
- 1969
- Last Reconstructed
- 2016
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 57.2 m (188 ft)
- Deck Width
- 16.9 m (55 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 6,100 vehicles/day
- Structure Number
- B61005000000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
How to read this record
This page shows what the last federal inspection recorded, not whether USH 53-STH 121-MAI 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 USH 53-STH 121-MAI against other structures in Trempealeau and across Wisconsin. Wisconsin 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 USH 53-STH 121-MAI?
USH 53-STH 121-MAI in Trempealeau, Wisconsin has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is USH 53-STH 121-MAI inspected?
USH 53-STH 121-MAI'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 6,100 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. USH 53-STH 121-MAI 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 USH 53-STH 121-MAI?
USH 53-STH 121-MAI has an NBI inventory load rating of 25.9 metric tons.
Who is responsible for maintaining USH 53-STH 121-MAI?
USH 53-STH 121-MAI is owned and maintained by State Highway Agency.
How old is USH 53-STH 121-MAI and does age affect safety?
USH 53-STH 121-MAI was built in 1969, making it 57 years old and last reconstructed in 2016.
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.