FHWA NBI 2024 Inspection record Public-domain dataset

USH 151-STH 32-STH

Carrying USH 151-STH 32-STH over S BR MANITOWOC RIVER

0.1M N JCT STH 32 TO N, Calumet, Wisconsin

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
19 t Inventory load rating

Bridge Snapshot: USH 151-STH 32-STH

The USH 151-STH 32-STH bridge in Calumet, Wisconsin carries USH 151-STH 32-STH over S BR MANITOWOC RIVER. It was built in 1951, making it 75 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 11.1 meters (36 feet) end to end. Daily traffic averages 9,200 vehicles, placing it in the moderately-trafficked tier of Wisconsin bridges. It is owned and maintained by City/Municipal Highway Agency.

The latest FHWA inspection records show culvert at 4/9. 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 19.4 metric tons.

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

How USH 151-STH 32-STH compares

▼ 13.9
Load rating vs Wisconsin average (33.3 t)
Bottom 5%
Lower load rating than 95% of Wisconsin bridges
63
Bridges in Calumet · 11 in Poor condition
USH 151-STH 32-STH 19.4 t
Wisconsin average 33.3 t

Live comparison across Wisconsin.

Historical Sufficiency Rating

PlainBridge-computed
53.9 / 100 - historical 50–79.9 band
Structural adequacy /55
14.7
Serviceability /30
28.0
Essentiality /15
14.1
Special reductions
−3.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Culvert
4/9
Poor (1–4)
Inventory Load Rating
19.4 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1951
Material
Concrete Continuous
Number of Spans
2
Structure Length
11.1 m (36 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
9,200 vehicles/day
Structure Number
B08000600000000

How to read this record

USH 151-STH 32-STH 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 USH 151-STH 32-STH against other structures in Calumet 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 USH 151-STH 32-STH?

USH 151-STH 32-STH in Calumet, Wisconsin on the FHWA's 0–9 scale.

How often is USH 151-STH 32-STH inspected?

USH 151-STH 32-STH'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 9,200 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. USH 151-STH 32-STH 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 USH 151-STH 32-STH?

USH 151-STH 32-STH has an NBI inventory load rating of 19.4 metric tons.

Who is responsible for maintaining USH 151-STH 32-STH?

USH 151-STH 32-STH is owned and maintained by City/Municipal Highway Agency.

How old is USH 151-STH 32-STH and does age affect safety?

USH 151-STH 32-STH was built in 1951, making it 75 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.