FHWA NBI 2024 Inspection record Public-domain dataset

CTH W

Carrying CTH W over MANITOWISH RIVER

0.6M N JCT USH 51, Vilas, Wisconsin

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
29 t Inventory load rating

Bridge Snapshot: CTH W

The CTH W bridge in Vilas, Wisconsin carries CTH W over MANITOWISH RIVER. It was built in 1982, making it 44 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 15.9 meters (52 feet) end to end. Daily traffic averages 1,693 vehicles, placing it in the moderately-trafficked tier of Wisconsin bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 4/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 29.2 metric tons.

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

How CTH W compares

▼ 4.1
Load rating vs Wisconsin average (33.3 t)
Bottom 25%
Lower load rating than 75% of Wisconsin bridges
29
Bridges in Vilas · 3 in Poor condition
CTH W 29.2 t
Wisconsin average 33.3 t

Live comparison across Wisconsin.

Historical Sufficiency Rating

PlainBridge-computed
49.9 / 100 - historical 20–49.9 band
Structural adequacy /55
28.1
Serviceability /30
14.1
Essentiality /15
8.6
Special reductions
−1.0

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 How the historical reference is calculated.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
5/9
Fair (5–6)
Superstructure
5/9
Fair (5–6)
Substructure
4/9
Poor (1–4)
Inventory Load Rating
29.2 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1982
Material
Prestressed Concrete
Number of Spans
1
Structure Length
15.9 m (52 ft)
Deck Width
10.8 m (35 ft)
Owner
County Highway Agency
Avg Daily Traffic
1,693 vehicles/day
Structure Number
B63001100000000

Condition Analysis

  • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
  • The superstructure (beams and supports above the deck) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
  • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear flagged for priority repair.

How to read this record

CTH W 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 CTH W against other structures in Vilas 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 CTH W?

CTH W in Vilas, Wisconsin has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.

How often is CTH W inspected?

CTH W'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 1,693 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. CTH W 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 CTH W?

CTH W has an NBI inventory load rating of 29.2 metric tons.

Who is responsible for maintaining CTH W?

CTH W is owned and maintained by County Highway Agency.

How old is CTH W and does age affect safety?

CTH W 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.