COASTAL HWY/SR1 SB
Carrying COASTAL HWY/SR1 SB over CEDAR CREEK
S/E OF MILFORD, Sussex, Delaware
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: COASTAL HWY/SR1 SB
The COASTAL HWY/SR1 SB bridge in Sussex, Delaware carries COASTAL HWY/SR1 SB over CEDAR CREEK. It was built in 1972, making it 54 years old today. The structure is built primarily of prestressed concrete and spans 2 sections, stretching 25.8 meters (85 feet) end to end. Daily traffic averages 12,515 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 6/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 57.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How COASTAL HWY/SR1 SB 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 How the historical reference is calculated.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
- 1972
- Material
- Prestressed Concrete
- Number of Spans
- 2
- Structure Length
- 25.8 m (85 ft)
- Deck Width
- 13.3 m (44 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 12,515 vehicles/day
- Structure Number
- 3933S014
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether COASTAL HWY/SR1 SB 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 COASTAL HWY/SR1 SB against other structures in Sussex 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 COASTAL HWY/SR1 SB?
COASTAL HWY/SR1 SB in Sussex, Delaware has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is COASTAL HWY/SR1 SB inspected?
COASTAL HWY/SR1 SB'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 12,515 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. COASTAL HWY/SR1 SB 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 COASTAL HWY/SR1 SB?
COASTAL HWY/SR1 SB has an NBI inventory load rating of 57.0 metric tons.
Who is responsible for maintaining COASTAL HWY/SR1 SB?
COASTAL HWY/SR1 SB is owned and maintained by State Highway Agency.
How old is COASTAL HWY/SR1 SB and does age affect safety?
COASTAL HWY/SR1 SB was built in 1972, making it 54 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.
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.