PA-309
Carrying PA-309 over NORRISTOWN ROAD
1.5 MI. W. PA-152 3257F02, Montgomery, Pennsylvania
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: PA-309
The PA-309 bridge in Montgomery, Pennsylvania carries PA-309 over NORRISTOWN ROAD. It was built in 2010, making it 16 years old today. The structure is built primarily of prestressed concrete. Daily traffic averages 9,569 vehicles, placing it in the moderately-trafficked tier of Pennsylvania bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. None of this bridge's reported major components fall into the Poor condition range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How PA-309 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 How the historical reference is calculated.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
- 2010
- Material
- Prestressed Concrete
- Avg Daily Traffic
- 9,569 vehicles/day
- Structure Number
- 000000000046178
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 PA-309 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 PA-309 against other structures in Montgomery 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 PA-309?
PA-309 in Montgomery, Pennsylvania on the FHWA's 0–9 scale.
How often is PA-309 inspected?
PA-309'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 9,569 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. PA-309 is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for PA-309?
An inventory load rating is not recorded for PA-309.
Who is responsible for maintaining PA-309?
Ownership is not specified for PA-309 in the NBI.
How old is PA-309 and does age affect safety?
PA-309 was built in 2010, making it 16 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.