FHWA NBI 2024 Inspection record Public-domain dataset

LRD BYRN GRWYNN RD

Carrying LRD BYRN GRWYNN RD over BR TROUT CREEK

1.0M E JCT CTH T, Iowa, Wisconsin

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
47 t Inventory load rating

Bridge Snapshot: LRD BYRN GRWYNN RD

The LRD BYRN GRWYNN RD bridge in Iowa, Wisconsin carries LRD BYRN GRWYNN RD over BR TROUT CREEK. It was built in 2001, making it 25 years old today. The structure is built primarily of concrete and spans 1 section, stretching 10.9 meters (36 feet) end to end. Daily traffic averages 83 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 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 47.0 metric tons.

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

How LRD BYRN GRWYNN RD compares

▲ 13.7
Load rating vs Wisconsin average (33.3 t)
Top 5%
Higher load rating than 95% of Wisconsin bridges
212
Bridges in Iowa · 12 in Poor condition
LRD BYRN GRWYNN RD 47.0 t
Wisconsin average 33.3 t

Live comparison across Wisconsin.

Historical Sufficiency Rating

PlainBridge-computed
98.9 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
29.0
Essentiality /15
14.9
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 How the historical reference is calculated.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
8/9
Good (7–9)
Superstructure
8/9
Good (7–9)
Substructure
8/9
Good (7–9)
Inventory Load Rating
47.0 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2001
Material
Concrete
Number of Spans
1
Structure Length
10.9 m (36 ft)
Deck Width
7.8 m (26 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
83 vehicles/day
Structure Number
B25011300000000

Condition Analysis

  • The deck (driving surface) is in good condition (8/9), showing no significant deterioration.
  • At 8/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
  • At 8/9, the substructure (piers and abutments) is in good shape and shows no significant wear.

How to read this record

This page shows what the last federal inspection recorded, not whether LRD BYRN GRWYNN 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 BYRN GRWYNN RD against other structures in Iowa 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 BYRN GRWYNN RD?

LRD BYRN GRWYNN RD in Iowa, Wisconsin 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 LRD BYRN GRWYNN RD inspected?

LRD BYRN GRWYNN 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 83 vehicles per day.

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

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

LRD BYRN GRWYNN RD has an NBI inventory load rating of 47.0 metric tons.

Who is responsible for maintaining LRD BYRN GRWYNN RD?

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

How old is LRD BYRN GRWYNN RD and does age affect safety?

LRD BYRN GRWYNN RD was built in 2001, making it 25 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.