FHWA NBI 2024 Inspection record Public-domain dataset

CSAH 4 ROW

Carrying CSAH 4 ROW over CO DITCH # 9

.2 MI W OF CSAH 19, Wilkin, Minnesota

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
8 t Inventory load rating

Bridge Snapshot: CSAH 4 ROW

The CSAH 4 ROW bridge in Wilkin, Minnesota carries CSAH 4 ROW over CO DITCH # 9. It was built in 1940, making it 86 years old today. The structure is built primarily of steel and spans 1 section, stretching 7.9 meters (26 feet) end to end. Daily traffic averages 456 vehicles, placing it in the lower-traffic tier of Minnesota bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 4/9, superstructure at 5/9, substructure at 7/9. 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. Its NBI inventory load rating is 8.2 metric tons.

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

How CSAH 4 ROW compares

▼ 27.5
Load rating vs Minnesota average (35.7 t)
Bottom 1%
Lower load rating than 99% of Minnesota bridges
191
Bridges in Wilkin · 7 in Poor condition
CSAH 4 ROW 8.2 t
Minnesota average 35.7 t

Live comparison across Minnesota.

Historical Sufficiency Rating

PlainBridge-computed
17.8 / 100 - historical under-20 band
Structural adequacy /55
6.3
Serviceability /30
11.5
Essentiality /15
0.0
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 How the historical reference is calculated.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
4/9
Poor (1–4)
Superstructure
5/9
Fair (5–6)
Substructure
7/9
Good (7–9)
Inventory Load Rating
8.2 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1940
Material
Steel
Number of Spans
1
Structure Length
7.9 m (26 ft)
Deck Width
5.5 m (18 ft)
Owner
County Highway Agency
Avg Daily Traffic
456 vehicles/day
Structure Number
84533

Condition Analysis

  • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
  • The superstructure (beams and supports above the deck) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
  • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.

How to read this record

CSAH 4 ROW 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 CSAH 4 ROW against other structures in Wilkin and across Minnesota. Minnesota 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 CSAH 4 ROW?

CSAH 4 ROW in Wilkin, Minnesota has a deck rating of 4/9, superstructure rating of 5/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is CSAH 4 ROW inspected?

CSAH 4 ROW'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 456 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. CSAH 4 ROW 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 CSAH 4 ROW?

CSAH 4 ROW has an NBI inventory load rating of 8.2 metric tons.

Who is responsible for maintaining CSAH 4 ROW?

CSAH 4 ROW is owned and maintained by County Highway Agency.

How old is CSAH 4 ROW and does age affect safety?

CSAH 4 ROW was built in 1940, making it 86 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.