FHWA NBI 2024 Inspection record Public-domain dataset

TR 229A STRINGTWN

Carrying TR 229A STRINGTWN over SUGAR CREEK

SW-24-T23NR2W, Tazewell, Illinois

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
32 t Inventory load rating

Bridge Snapshot: TR 229A STRINGTWN

The TR 229A STRINGTWN bridge in Tazewell, Illinois carries TR 229A STRINGTWN over SUGAR CREEK. It was built in 1985, making it 41 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 20.4 meters (67 feet) end to end. Daily traffic averages 550 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 7/9, superstructure at 7/9, 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 32.4 metric tons.

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

How TR 229A STRINGTWN compares

▼ 2.2
Load rating vs Illinois average (34.6 t)
Bottom 23%
Lower load rating than 77% of Illinois bridges
361
Bridges in Tazewell · 40 in Poor condition
TR 229A STRINGTWN 32.4 t
Illinois average 34.6 t

Live comparison across Illinois.

Historical Sufficiency Rating

PlainBridge-computed
90.9 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
24.0
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 How the historical reference is calculated.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
7/9
Good (7–9)
Superstructure
7/9
Good (7–9)
Substructure
8/9
Good (7–9)
Inventory Load Rating
32.4 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1985
Material
Prestressed Concrete
Number of Spans
1
Structure Length
20.4 m (67 ft)
Deck Width
8.8 m (29 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
550 vehicles/day
Structure Number
090319800000000

Condition Analysis

  • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
  • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
  • 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 TR 229A STRINGTWN 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 TR 229A STRINGTWN against other structures in Tazewell 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 TR 229A STRINGTWN?

TR 229A STRINGTWN in Tazewell, Illinois has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.

How often is TR 229A STRINGTWN inspected?

TR 229A STRINGTWN'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 550 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. TR 229A STRINGTWN 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 TR 229A STRINGTWN?

TR 229A STRINGTWN has an NBI inventory load rating of 32.4 metric tons.

Who is responsible for maintaining TR 229A STRINGTWN?

TR 229A STRINGTWN is owned and maintained by Town/Township Highway Agency.

How old is TR 229A STRINGTWN and does age affect safety?

TR 229A STRINGTWN was built in 1985, making it 41 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.