T-531 BIGLEY AVE
Carrying T-531 BIGLEY AVE over BOLIVAR RUN
300 SOUTH OF BOLIVAR DR, McKean, Pennsylvania
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
T-531 BIGLEY AVE in McKean, Pennsylvania sits above 10% of rated Pennsylvania bridges on inventory load rating (23 t), while its 1979 build year is earlier than 53% of McKean's recorded-year cohort (226 bridges).
T-531 BIGLEY AVE in McKean, Pennsylvania is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1979, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair 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:000000000040075
INTERSTATE-ERA · PRESTRESS · SINGLE-SPAN · TIED-CTRL · LOCAL-ADT · STANDARD-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
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: T-531 BIGLEY AVE
The T-531 BIGLEY AVE bridge in McKean, Pennsylvania carries T-531 BIGLEY AVE over BOLIVAR RUN. It was built in 1979, making it 47 years old today. It was last reconstructed in 2016, extending its service life. The structure is built primarily of prestressed concrete and spans 1 section, stretching 13.4 meters (44 feet) end to end. Daily traffic averages 300 vehicles, placing it in the lower-traffic tier of Pennsylvania bridges. It is owned and maintained by Other Local Agencies.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range.
How T-531 BIGLEY AVE compares
Age against the county: built in 1979, earlier than 119 of McKean's 226 bridges with a recorded construction year (53%), against a county median build year of 1986. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Pennsylvania bridges with a recorded inventory load rating (23,297 of 23,299 rated).
T-531 BIGLEY AVE vs every rated Pennsylvania bridge
Inventory load rating (metric tons), FHWA NBI, this state
23 Top 90% higher than 10% 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.
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.
McKean inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 226 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
- 1979
- Last Reconstructed
- 2016
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 13.4 m (44 ft)
- Deck Width
- 9.8 m (32 ft)
- Owner
- Other Local Agencies
- Avg Daily Traffic
- 300 vehicles/day
- Structure Number
- 000000000040075
Condition Analysis
- • The deck (driving surface) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
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 T-531 BIGLEY AVE 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 T-531 BIGLEY AVE against other structures in McKean 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 T-531 BIGLEY AVE?
T-531 BIGLEY AVE in McKean, Pennsylvania has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is T-531 BIGLEY AVE inspected?
T-531 BIGLEY AVE'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 300 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. T-531 BIGLEY AVE 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 T-531 BIGLEY AVE?
T-531 BIGLEY AVE has an NBI inventory load rating of 22.7 metric tons.
Who is responsible for maintaining T-531 BIGLEY AVE?
T-531 BIGLEY AVE is owned and maintained by Other Local Agencies.
How old is T-531 BIGLEY AVE and does age affect safety?
T-531 BIGLEY AVE was built in 1979, making it 47 years old and last reconstructed in 2016.
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.