BL OF THE ALLIES
Carrying BL OF THE ALLIES over FORBES AV MAURICE ST
1 MILE E OF BIRMINGHAM BR, Allegheny, Pennsylvania
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
BL OF THE ALLIES in Allegheny, Pennsylvania sits above 60% of rated Pennsylvania bridges on inventory load rating (40 t), while its 2008 build year is earlier than 12% of Allegheny's recorded-year cohort (1,294 bridges).
BL OF THE ALLIES in Allegheny, Pennsylvania is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 2008, 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 PA:000000000045203
POST-2000 · STEEL · MULTI-SPAN · TIED-CTRL · HEAVY-ADT · STANDARD-LOAD · CAT-GOOD
- POST-2000 2000+
- STEEL Steel
- MULTI-SPAN 2 spans
- TIED-CTRL Tied control
- HEAVY-ADT Heavy 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: BL OF THE ALLIES
The BL OF THE ALLIES bridge in Allegheny, Pennsylvania carries BL OF THE ALLIES over FORBES AV MAURICE ST. It was built in 2008, making it 18 years old today. The structure is built primarily of steel continuous and spans 2 sections, stretching 94.5 meters (310 feet) end to end. Daily traffic averages 13,158 vehicles, placing it in the heavily-trafficked tier of Pennsylvania bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How BL OF THE ALLIES compares
Age against the county: built in 2008, earlier than 158 of Allegheny's 1,294 bridges with a recorded construction year (12%), against a county median build year of 1968. 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).
BL OF THE ALLIES vs every rated Pennsylvania bridge
Inventory load rating (metric tons), FHWA NBI, this state
40 Top 40% higher than 60% 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.
Allegheny inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 1,294 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
- 2008
- Material
- Steel Continuous
- Number of Spans
- 2
- Structure Length
- 94.5 m (310 ft)
- Deck Width
- 17.4 m (57 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 13,158 vehicles/day
- Structure Number
- 000000000045203
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) rates good at 8/9, with no significant deterioration on file.
- • 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 BL OF THE ALLIES 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 BL OF THE ALLIES 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 BL OF THE ALLIES?
BL OF THE ALLIES in Allegheny, Pennsylvania has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is BL OF THE ALLIES inspected?
BL OF THE ALLIES'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 13,158 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. BL OF THE ALLIES 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 BL OF THE ALLIES?
BL OF THE ALLIES has an NBI inventory load rating of 39.9 metric tons.
Who is responsible for maintaining BL OF THE ALLIES?
BL OF THE ALLIES is owned and maintained by State Highway Agency.
How old is BL OF THE ALLIES and does age affect safety?
BL OF THE ALLIES was built in 2008, making it 18 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.