FHWA NBI 2024 Inspection record Public-domain dataset

FREEBURG TWP.TR 20

Carrying FREEBURG TWP.TR 20 over DRUM HILL BR

1.0 MI W ILL. 4, St. Clair, Illinois

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
32 t Inventory load rating

Bridge Snapshot: FREEBURG TWP.TR 20

The FREEBURG TWP.TR 20 bridge in St. Clair, Illinois carries FREEBURG TWP.TR 20 over DRUM HILL BR. It was built in 1966, making it 60 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 18.3 meters (60 feet) end to end. Daily traffic averages 75 vehicles, placing it in the lower-traffic tier of Illinois bridges. It is owned and maintained by Town/Township Highway Agency.

The latest FHWA inspection records show a deck rating of 6/9, superstructure at 3/9, substructure at 6/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 32.1 metric tons.

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

How FREEBURG TWP.TR 20 compares

▼ 2.5
Load rating vs Illinois average (34.6 t)
Bottom 23%
Lower load rating than 77% of Illinois bridges
502
Bridges in St. Clair · 40 in Poor condition
FREEBURG TWP.TR 20 32.1 t
Illinois average 34.6 t

Live comparison across Illinois.

Historical Sufficiency Rating

PlainBridge-computed
52.9 / 100 - historical 50–79.9 band
Structural adequacy /55
14.9
Serviceability /30
26.0
Essentiality /15
14.9
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 How the historical reference is calculated.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

Deck
6/9
Fair (5–6)
Superstructure
3/9
Poor (1–4)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
32.1 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1966
Material
Concrete
Number of Spans
2
Structure Length
18.3 m (60 ft)
Deck Width
8.0 m (26 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
75 vehicles/day
Structure Number
082406700000000

Condition Analysis

  • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
  • At 3/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
  • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.

How to read this record

FREEBURG TWP.TR 20 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 FREEBURG TWP.TR 20 against other structures in St. Clair and across Illinois. Illinois 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 FREEBURG TWP.TR 20?

FREEBURG TWP.TR 20 in St. Clair, Illinois has a deck rating of 6/9, superstructure rating of 3/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.

How often is FREEBURG TWP.TR 20 inspected?

FREEBURG TWP.TR 20'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 75 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. FREEBURG TWP.TR 20 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 FREEBURG TWP.TR 20?

FREEBURG TWP.TR 20 has an NBI inventory load rating of 32.1 metric tons.

Who is responsible for maintaining FREEBURG TWP.TR 20?

FREEBURG TWP.TR 20 is owned and maintained by Town/Township Highway Agency.

How old is FREEBURG TWP.TR 20 and does age affect safety?

FREEBURG TWP.TR 20 was built in 1966, making it 60 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.