Lyndhurst Circuit
Carrying Lyndhurst Circuit over Unnamed Tributary
340' N of Wexford RdSR910, Allegheny, Pennsylvania
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: Lyndhurst Circuit
The Lyndhurst Circuit bridge in Allegheny, Pennsylvania carries Lyndhurst Circuit over Unnamed Tributary. It was built in 1988, making it 38 years old today. The structure is built primarily of concrete and spans 1 section, stretching 6.1 meters (20 feet) end to end. Daily traffic averages 50 vehicles, placing it in the lower-traffic tier of Pennsylvania bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection records show 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 49.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How Lyndhurst Circuit compares
Live comparison across Pennsylvania.
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 How the historical reference is calculated.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
- 1988
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 6.1 m (20 ft)
- Deck Width
- 9.2 m (30 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 50 vehicles/day
- Structure Number
- 000000000049129
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • 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 Lyndhurst Circuit 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 Lyndhurst Circuit against other structures in Allegheny 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 Lyndhurst Circuit?
Lyndhurst Circuit in Allegheny, Pennsylvania, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is Lyndhurst Circuit inspected?
Lyndhurst Circuit'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 50 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Lyndhurst Circuit 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 Lyndhurst Circuit?
Lyndhurst Circuit has an NBI inventory load rating of 49.0 metric tons.
Who is responsible for maintaining Lyndhurst Circuit?
Lyndhurst Circuit is owned and maintained by Town/Township Highway Agency.
How old is Lyndhurst Circuit and does age affect safety?
Lyndhurst Circuit was built in 1988, making it 38 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.