SR 400, LR228
Carrying SR 400, LR228 over PA Turnpike - I-76
Milepost 53.66, Allegheny, Pennsylvania
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SR 400, LR228
The SR 400, LR228 bridge in Allegheny, Pennsylvania carries SR 400, LR228 over PA Turnpike - I-76. It was built in 2018, making it 8 years old today. The structure is built primarily of prestressed concrete continuous and spans 2 sections, stretching 64.3 meters (211 feet) end to end. Daily traffic averages 7,708 vehicles, placing it in the moderately-trafficked tier of Pennsylvania bridges. It is owned and maintained by State Toll Authority.
The latest FHWA inspection records show a deck rating of 8/9, superstructure at 8/9, substructure at 8/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 36.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SR 400, LR228 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 How the historical reference is calculated.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
- 2018
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 64.3 m (211 ft)
- Deck Width
- 13.3 m (44 ft)
- Owner
- State Toll Authority
- Avg Daily Traffic
- 7,708 vehicles/day
- Structure Number
- 000000000055084
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 8/9, with no significant deterioration on file.
- • At 8/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether SR 400, LR228 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 SR 400, LR228 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 SR 400, LR228?
SR 400, LR228 in Allegheny, Pennsylvania has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is SR 400, LR228 inspected?
SR 400, LR228'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 7,708 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SR 400, LR228 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 SR 400, LR228?
SR 400, LR228 has an NBI inventory load rating of 36.9 metric tons.
Who is responsible for maintaining SR 400, LR228?
SR 400, LR228 is owned and maintained by State Toll Authority.
How old is SR 400, LR228 and does age affect safety?
SR 400, LR228 was built in 2018, making it 8 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.