SAW MILL RUN BLVD
Carrying SAW MILL RUN BLVD over W LIBERTY AVE. SR 3069
0.1 MILE S.LIBERTY TUNNEL, Allegheny, Pennsylvania
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SAW MILL RUN BLVD in Allegheny, Pennsylvania sits above 94% of rated Pennsylvania bridges on inventory load rating (62 t), while its 1999 build year is earlier than 18% of Allegheny's recorded-year cohort (1,294 bridges).
SAW MILL RUN BLVD in Allegheny, Pennsylvania is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1999, 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:000000000040674
LATE-CENTURY · STEEL · SINGLE-SPAN · TIED-CTRL · HEAVY-ADT · HEAVY-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- STEEL Steel
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- HEAVY-LOAD Heavy 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: SAW MILL RUN BLVD
The SAW MILL RUN BLVD bridge in Allegheny, Pennsylvania carries SAW MILL RUN BLVD over W LIBERTY AVE. SR 3069. It was built in 1999, making it 27 years old today. The structure is built primarily of steel and spans 1 section, stretching 57.3 meters (188 feet) end to end. Daily traffic averages 34,337 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 7/9, substructure at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range.
How SAW MILL RUN BLVD compares
Age against the county: built in 1999, earlier than 234 of Allegheny's 1,294 bridges with a recorded construction year (18%), 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).
SAW MILL RUN BLVD vs every rated Pennsylvania bridge
Inventory load rating (metric tons), FHWA NBI, this state
62 Top 6% higher than 94% 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
- 1999
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 57.3 m (188 ft)
- Deck Width
- 25.9 m (85 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 34,337 vehicles/day
- Structure Number
- 000000000040674
Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • 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 SAW MILL RUN BLVD 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 SAW MILL RUN BLVD 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 SAW MILL RUN BLVD?
SAW MILL RUN BLVD in Allegheny, Pennsylvania has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is SAW MILL RUN BLVD inspected?
SAW MILL RUN BLVD'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 34,337 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SAW MILL RUN BLVD 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 SAW MILL RUN BLVD?
SAW MILL RUN BLVD has an NBI inventory load rating of 61.7 metric tons.
Who is responsible for maintaining SAW MILL RUN BLVD?
SAW MILL RUN BLVD is owned and maintained by State Highway Agency.
How old is SAW MILL RUN BLVD and does age affect safety?
SAW MILL RUN BLVD was built in 1999, making it 27 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.