KNOWLTON ROAD
Carrying KNOWLTON ROAD over CHESTER CREEK TRAIL
3/4 MI. E. PA452 3696D10, Delaware, Pennsylvania
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
KNOWLTON ROAD in Delaware, Pennsylvania sits above 42% of rated Pennsylvania bridges on inventory load rating (35 t), while its 2016 build year is earlier than 4% of Delaware's recorded-year cohort (387 bridges).
KNOWLTON ROAD in Delaware, Pennsylvania is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 2016, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 8. 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 PA:000000000057115
POST-2000 · CONCRETE · SINGLE-SPAN · CULVERT-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-GOOD
- POST-2000 2000+
- CONCRETE Concrete
- SINGLE-SPAN Single span
- CULVERT-LED Culvert-led
- 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: KNOWLTON ROAD
The KNOWLTON ROAD bridge in Delaware, Pennsylvania carries KNOWLTON ROAD over CHESTER CREEK TRAIL. It was built in 2016, making it 10 years old today. The structure is built primarily of concrete and spans 1 section, stretching 6.7 meters (22 feet) end to end. Daily traffic averages 5,241 vehicles, placing it in the moderately-trafficked tier of Pennsylvania bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How KNOWLTON ROAD compares
Age against the county: built in 2016, earlier than 17 of Delaware's 387 bridges with a recorded construction year (4%), against a county median build year of 1973. This is one of the newer structures in its county.
Live comparison across Pennsylvania bridges with a recorded inventory load rating (23,297 of 23,299 rated).
KNOWLTON ROAD vs every rated Pennsylvania bridge
Inventory load rating (metric tons), FHWA NBI, this state
35 Top 58% higher than 42% of 23,297 bridges
rated Pennsylvania 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.
Delaware inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 387 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
- 2016
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 6.7 m (22 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 5,241 vehicles/day
- Structure Number
- 000000000057115
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 KNOWLTON ROAD 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 KNOWLTON ROAD against other structures in Delaware and across Pennsylvania. Pennsylvania 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 KNOWLTON ROAD?
KNOWLTON ROAD in Delaware, Pennsylvania on the FHWA's 0–9 scale.
How often is KNOWLTON ROAD inspected?
KNOWLTON ROAD'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 5,241 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. KNOWLTON ROAD 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 KNOWLTON ROAD?
KNOWLTON ROAD has an NBI inventory load rating of 34.7 metric tons.
Who is responsible for maintaining KNOWLTON ROAD?
KNOWLTON ROAD is owned and maintained by State Highway Agency.
How old is KNOWLTON ROAD and does age affect safety?
KNOWLTON ROAD was built in 2016, making it 10 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.