LRD ROCK LEDGE RD
Carrying LRD ROCK LEDGE RD over E TWIN RIVER
1.7M W JCT CTH "B", Manitowoc, Wisconsin
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
LRD ROCK LEDGE RD in Manitowoc, Wisconsin sits above 3% of rated Wisconsin bridges on inventory load rating (18 t), while its 1981 build year is earlier than 41% of Manitowoc's recorded-year cohort (269 bridges).
LRD ROCK LEDGE RD in Manitowoc, Wisconsin is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1981, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure WI:P36008700000000
LATE-CENTURY · TIMBER · MULTI-SPAN · TIED-CTRL · TRACE-ADT · LIGHT-LOAD · CAT-POOR
- LATE-CENTURY 1980–1999
- TIMBER Wood or timber
- MULTI-SPAN 3 spans
- TIED-CTRL Tied control
- TRACE-ADT Trace ADT
- LIGHT-LOAD Light load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: LRD ROCK LEDGE RD
The LRD ROCK LEDGE RD bridge in Manitowoc, Wisconsin carries LRD ROCK LEDGE RD over E TWIN RIVER. It was built in 1981, making it 45 years old today. The structure is built primarily of wood or timber and spans 3 sections, stretching 25.6 meters (84 feet) end to end. Daily traffic averages 47 vehicles, placing it in the lower-traffic tier of Wisconsin bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 5/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How LRD ROCK LEDGE RD compares
Age against the county: built in 1981, earlier than 110 of Manitowoc's 269 bridges with a recorded construction year (41%), against a county median build year of 1979. This is one of the newer structures in its county.
Live comparison across Wisconsin bridges with a recorded inventory load rating (14,446 rated).
LRD ROCK LEDGE RD vs every rated Wisconsin bridge
Inventory load rating (metric tons), FHWA NBI, this state
18 Top 97% higher than 3% of 14,446 bridges
rated Wisconsin bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Manitowoc inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 269 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1981
- Material
- Wood or Timber
- Number of Spans
- 3
- Structure Length
- 25.6 m (84 ft)
- Deck Width
- 9.0 m (30 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 47 vehicles/day
- Structure Number
- P36008700000000
Condition Analysis
- • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
- • The superstructure (beams and supports above the deck) rates poor at 4/9, with advanced deterioration recorded on the latest inspection.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
LRD ROCK LEDGE RD 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 LRD ROCK LEDGE RD against other structures in Manitowoc 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 LRD ROCK LEDGE RD?
LRD ROCK LEDGE RD in Manitowoc, Wisconsin has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is LRD ROCK LEDGE RD inspected?
LRD ROCK LEDGE RD'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 47 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LRD ROCK LEDGE RD 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 LRD ROCK LEDGE RD?
LRD ROCK LEDGE RD has an NBI inventory load rating of 17.8 metric tons.
Who is responsible for maintaining LRD ROCK LEDGE RD?
LRD ROCK LEDGE RD is owned and maintained by Town/Township Highway Agency.
How old is LRD ROCK LEDGE RD and does age affect safety?
LRD ROCK LEDGE RD was built in 1981, making it 45 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.