I 495 NB
Carrying I 495 NB over 84" SEWER PIPE
WILMINGTON, New Castle, Delaware
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
I 495 NB in New Castle, Delaware sits above 61% of rated Delaware bridges on inventory load rating (41 t), while its 1976 build year is earlier than 48% of New Castle's recorded-year cohort (527 bridges).
I 495 NB in New Castle, Delaware is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1976, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good 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 DE:1817N060
INTERSTATE-ERA · CONCRETE · MULTI-SPAN · TIED-CTRL · HEAVY-ADT · HEAVY-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
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: I 495 NB
The I 495 NB bridge in New Castle, Delaware carries I 495 NB over 84" SEWER PIPE. It was built in 1976, making it 50 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 31.1 meters (102 feet) end to end. Daily traffic averages 35,603 vehicles, placing it in the heavily-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 8/9. The weakest component sits in good condition. All reported major components score above the Poor range.
How I 495 NB compares
Age against the county: built in 1976, earlier than 251 of New Castle's 527 bridges with a recorded construction year (48%), against a county median build year of 1976.
Live comparison across Delaware bridges with a recorded inventory load rating (872 rated).
I 495 NB vs every rated Delaware bridge
Inventory load rating (metric tons), FHWA NBI, this state
41 Top 39% higher than 61% of 872 bridges
rated Delaware 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.
New Castle inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 527 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
- 1976
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 31.1 m (102 ft)
- Deck Width
- 16.5 m (54 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 35,603 vehicles/day
- Structure Number
- 1817N060
Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
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 I 495 NB 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 I 495 NB 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 I 495 NB?
I 495 NB in New Castle, Delaware 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 I 495 NB inspected?
I 495 NB'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 35,603 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I 495 NB 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 I 495 NB?
I 495 NB has an NBI inventory load rating of 40.5 metric tons.
Who is responsible for maintaining I 495 NB?
I 495 NB is owned and maintained by State Highway Agency.
How old is I 495 NB and does age affect safety?
I 495 NB was built in 1976, making it 50 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.