FAS 1273/DuPont Rd
Carrying FAS 1273/DuPont Rd over ARMSTRONG RUN
0.27 MI E CO LINE, Grundy, Illinois
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
FAS 1273/DuPont Rd in Grundy, Illinois sits above 64% of rated Illinois bridges on inventory load rating (34 t), while its 2006 build year is earlier than 13% of Grundy's recorded-year cohort (269 bridges).
FAS 1273/DuPont Rd in Grundy, Illinois is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 2006, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. The lowest applicable rating sets the federal condition category, so this Fair result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure IL:032311500000000
POST-2000 · CONCRETE · MULTI-SPAN · SUPER-LED · LOCAL-ADT · STANDARD-LOAD · CAT-FAIR
- POST-2000 2000+
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- SUPER-LED Superstructure-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: FAS 1273/DuPont Rd
The FAS 1273/DuPont Rd bridge in Grundy, Illinois carries FAS 1273/DuPont Rd over ARMSTRONG RUN. It was built in 2006, making it 20 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 29.0 meters (95 feet) end to end. Daily traffic averages 250 vehicles, placing it in the lower-traffic tier of Illinois bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 8/9, superstructure at 6/9, substructure at 8/9. The weakest component sits in fair condition. All reported major components score above the Poor range.
How FAS 1273/DuPont Rd compares
Age against the county: built in 2006, earlier than 35 of Grundy's 269 bridges with a recorded construction year (13%), against a county median build year of 1984. This is one of the newer structures in its county.
Live comparison across Illinois bridges with a recorded inventory load rating (26,904 of 26,928 rated).
FAS 1273/DuPont Rd vs every rated Illinois bridge
Inventory load rating (metric tons), FHWA NBI, this state
34 Top 36% higher than 64% of 26,904 bridges
rated Illinois bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Grundy inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 269 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 2006
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 29.0 m (95 ft)
- Deck Width
- 9.1 m (30 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 250 vehicles/day
- Structure Number
- 032311500000000
Condition Analysis
- • The deck (driving surface) is in good condition (8/9), showing no significant deterioration.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 8/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether FAS 1273/DuPont Rd 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 FAS 1273/DuPont Rd against other structures in Grundy 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 FAS 1273/DuPont Rd?
FAS 1273/DuPont Rd in Grundy, Illinois has a deck rating of 8/9, superstructure rating of 6/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is FAS 1273/DuPont Rd inspected?
FAS 1273/DuPont Rd'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 250 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. FAS 1273/DuPont Rd is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for FAS 1273/DuPont Rd?
FAS 1273/DuPont Rd has an NBI inventory load rating of 34.0 metric tons.
Who is responsible for maintaining FAS 1273/DuPont Rd?
FAS 1273/DuPont Rd is owned and maintained by County Highway Agency.
How old is FAS 1273/DuPont Rd and does age affect safety?
FAS 1273/DuPont Rd was built in 2006, making it 20 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.