USH STH 52 EB-USH
Carrying USH STH 52 EB-USH over WISCONSIN RIVER 31
0.4M S JCT STH 52 TO W, Marathon, Wisconsin
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: USH STH 52 EB-USH
The USH STH 52 EB-USH bridge in Marathon, Wisconsin carries USH STH 52 EB-USH over WISCONSIN RIVER 31. It was built in 1915, making it 111 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 37.7 meters (124 feet) end to end. Daily traffic averages 28,144 vehicles, placing it in the heavily-trafficked tier of Wisconsin bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show superstructure at 5/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. 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 USH STH 52 EB-USH 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 How the historical reference is calculated.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
- 1915
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 37.7 m (124 ft)
- Deck Width
- 18.7 m (61 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 28,144 vehicles/day
- Structure Number
- B37053800000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear flagged for priority repair.
How to read this record
USH STH 52 EB-USH is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare USH STH 52 EB-USH against other structures in Marathon 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 STH 52 EB-USH?
USH STH 52 EB-USH in Marathon, Wisconsin, superstructure rating of 5/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is USH STH 52 EB-USH inspected?
USH STH 52 EB-USH'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 28,144 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. USH STH 52 EB-USH is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for USH STH 52 EB-USH?
USH STH 52 EB-USH has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining USH STH 52 EB-USH?
USH STH 52 EB-USH is owned and maintained by City/Municipal Highway Agency.
How old is USH STH 52 EB-USH and does age affect safety?
USH STH 52 EB-USH was built in 1915, making it 111 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.