ALPHA DR
Carrying ALPHA DR over SR 0028 NB SB
TWP.RD 503 OVER SR 0028, Allegheny, Pennsylvania
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
ALPHA DR in Allegheny, Pennsylvania sits above 3% of rated Pennsylvania bridges on inventory load rating (12 t), while its 1970 build year is earlier than 46% of Allegheny's recorded-year cohort (1,294 bridges).
ALPHA DR in Allegheny, Pennsylvania is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1970, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. 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:000000000000624
INTERSTATE-ERA · PRESTRESS · LONG-SPAN-RUN · SUPER-LED · ARTERIAL-ADT · LIGHT-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- LONG-SPAN-RUN 4 spans
- SUPER-LED Superstructure-led
- ARTERIAL-ADT Arterial ADT
- LIGHT-LOAD Light 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: ALPHA DR
The ALPHA DR bridge in Allegheny, Pennsylvania carries ALPHA DR over SR 0028 NB SB. It was built in 1970, making it 56 years old today. It was last reconstructed in 2015, extending its service life. The structure is built primarily of prestressed concrete and spans 4 sections, stretching 76.2 meters (250 feet) end to end. Daily traffic averages 2,486 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 a deck rating of 8/9, superstructure at 6/9, substructure at 7/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How ALPHA DR compares
Age against the county: built in 1970, earlier than 598 of Allegheny's 1,294 bridges with a recorded construction year (46%), 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).
ALPHA DR vs every rated Pennsylvania bridge
Inventory load rating (metric tons), FHWA NBI, this state
12 Top 97% higher than 3% 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
- 1970
- Last Reconstructed
- 2015
- Material
- Prestressed Concrete
- Number of Spans
- 4
- Structure Length
- 76.2 m (250 ft)
- Deck Width
- 16.2 m (53 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 2,486 vehicles/day
- Structure Number
- 000000000000624
Condition Analysis
- • At 8/9, the deck (driving surface) is in good shape and shows no significant wear.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
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 ALPHA DR 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 ALPHA DR 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 ALPHA DR?
ALPHA DR in Allegheny, Pennsylvania has a deck rating of 8/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is ALPHA DR inspected?
ALPHA DR'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 2,486 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ALPHA DR 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 ALPHA DR?
ALPHA DR has an NBI inventory load rating of 11.8 metric tons.
Who is responsible for maintaining ALPHA DR?
ALPHA DR is owned and maintained by State Highway Agency.
How old is ALPHA DR and does age affect safety?
ALPHA DR was built in 1970, making it 56 years old and last reconstructed in 2015.
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.