SILVER LAKE RD.
Carrying SILVER LAKE RD. over SILVER LAKE SPILLWY
S.E. OF MIDDLETOWN, New Castle, Delaware
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SILVER LAKE RD. in New Castle, Delaware sits above 28% of rated Delaware bridges on inventory load rating (33 t), while its 1931 build year is earlier than 92% of New Castle's recorded-year cohort (527 bridges).
SILVER LAKE RD. in New Castle, Delaware is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1931, 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:1407 442
PRE-1950 · STEEL · SINGLE-SPAN · TIED-CTRL · ARTERIAL-ADT · STANDARD-LOAD · CAT-GOOD
- PRE-1950 Pre-1950
- STEEL Steel
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- ARTERIAL-ADT Arterial ADT
- STANDARD-LOAD Standard 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: SILVER LAKE RD.
The SILVER LAKE RD. bridge in New Castle, Delaware carries SILVER LAKE RD. over SILVER LAKE SPILLWY. It was built in 1931, making it 95 years old today. It was last reconstructed in 1939, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 5,932 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. No reported major component scores in the Poor range under the current federal condition thresholds.
How SILVER LAKE RD. compares
Age against the county: built in 1931, earlier than 487 of New Castle's 527 bridges with a recorded construction year (92%), against a county median build year of 1976. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Delaware bridges with a recorded inventory load rating (872 rated).
SILVER LAKE RD. vs every rated Delaware bridge
Inventory load rating (metric tons), FHWA NBI, this state
33 Top 72% higher than 28% 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
- 1931
- Last Reconstructed
- 1939
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 6.4 m (21 ft)
- Deck Width
- 6.8 m (22 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 5,932 vehicles/day
- Structure Number
- 1407 442
Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • 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) rates good at 7/9, with no significant deterioration on file.
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 SILVER LAKE 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 SILVER LAKE RD. 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 SILVER LAKE RD.?
SILVER LAKE RD. 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 SILVER LAKE RD. inspected?
SILVER LAKE 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 5,932 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SILVER LAKE RD. 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 SILVER LAKE RD.?
SILVER LAKE RD. has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining SILVER LAKE RD.?
SILVER LAKE RD. is owned and maintained by State Highway Agency.
How old is SILVER LAKE RD. and does age affect safety?
SILVER LAKE RD. was built in 1931, making it 95 years old and last reconstructed in 1939.
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.