DUPONT RD / SR100
Carrying DUPONT RD / SR100 over DELAWARE VALLEY RR
ELSMERE, New Castle, Delaware
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: DUPONT RD / SR100
The DUPONT RD / SR100 bridge in New Castle, Delaware carries DUPONT RD / SR100 over DELAWARE VALLEY RR. It was built in 1959, making it 67 years old today. It was last reconstructed in 2019, extending its service life. The structure is built primarily of steel and spans 3 sections, stretching 55.5 meters (182 feet) end to end. Daily traffic averages 8,279 vehicles, placing it in the moderately-trafficked tier of Delaware bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 34.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How DUPONT RD / SR100 compares
Live comparison across Delaware.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1959
- Last Reconstructed
- 2019
- Material
- Steel
- Number of Spans
- 3
- Structure Length
- 55.5 m (182 ft)
- Deck Width
- 17.5 m (57 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 8,279 vehicles/day
- Structure Number
- 1634 027
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • At 7/9, 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 DUPONT RD / SR100 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 DUPONT RD / SR100 against other structures in New Castle and across Delaware. Delaware 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 DUPONT RD / SR100?
DUPONT RD / SR100 in New Castle, Delaware has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is DUPONT RD / SR100 inspected?
DUPONT RD / SR100'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 8,279 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. DUPONT RD / SR100 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 DUPONT RD / SR100?
DUPONT RD / SR100 has an NBI inventory load rating of 34.0 metric tons.
Who is responsible for maintaining DUPONT RD / SR100?
DUPONT RD / SR100 is owned and maintained by State Highway Agency.
How old is DUPONT RD / SR100 and does age affect safety?
DUPONT RD / SR100 was built in 1959, making it 67 years old and last reconstructed in 2019.
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.
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.