FHWA NBI 2024 Inspection record Public-domain dataset

LRD CORLAD RD

Carrying LRD CORLAD RD over BLACK CREEK

1.8M S JCT STH 97, Marathon, Wisconsin

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
21 t Inventory load rating

Bridge Snapshot: LRD CORLAD RD

The LRD CORLAD RD bridge in Marathon, Wisconsin carries LRD CORLAD RD over BLACK CREEK. It was built in 1982, making it 44 years old today. The structure is built primarily of prestressed concrete continuous and spans 2 sections, stretching 32.9 meters (108 feet) end to end. Daily traffic averages 25 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 7/9, superstructure at 8/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 21.1 metric tons.

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

How LRD CORLAD RD compares

▼ 12.2
Load rating vs Wisconsin average (33.3 t)
Bottom 8%
Lower load rating than 92% of Wisconsin bridges
534
Bridges in Marathon · 54 in Poor condition
LRD CORLAD RD 21.1 t
Wisconsin average 33.3 t

Live comparison across Wisconsin.

Historical Sufficiency Rating

PlainBridge-computed
82.6 / 100 - historical 80–100 band
Structural adequacy /55
42.6
Serviceability /30
25.0
Essentiality /15
15.0
Special reductions
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 How the historical reference is calculated.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

Deck
7/9
Good (7–9)
Superstructure
8/9
Good (7–9)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
21.1 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1982
Material
Prestressed Concrete Continuous
Number of Spans
2
Structure Length
32.9 m (108 ft)
Deck Width
7.9 m (26 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
25 vehicles/day
Structure Number
B37019400000000

Condition Analysis

  • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
  • At 8/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
  • 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 LRD CORLAD RD 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 LRD CORLAD RD 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 LRD CORLAD RD?

LRD CORLAD RD in Marathon, 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 LRD CORLAD RD inspected?

LRD CORLAD 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 25 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. LRD CORLAD RD 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 LRD CORLAD RD?

LRD CORLAD RD has an NBI inventory load rating of 21.1 metric tons.

Who is responsible for maintaining LRD CORLAD RD?

LRD CORLAD RD is owned and maintained by Town/Township Highway Agency.

How old is LRD CORLAD RD and does age affect safety?

LRD CORLAD RD was built in 1982, making it 44 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.