CSWY BRIDGE N. B.
Carrying CSWY BRIDGE N. B. over LAKE PONTCHARTRAIN
CAUSEWAY - NORTH BOUND, St. Tammany, Louisiana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: CSWY BRIDGE N. B.
The CSWY BRIDGE N. B. bridge in St. Tammany, Louisiana carries CSWY BRIDGE N. B. over LAKE PONTCHARTRAIN. It was built in 1965, making it 61 years old today. It was last reconstructed in 1969, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 38791.6 meters (127275 feet) end to end. Daily traffic averages 18,830 vehicles, placing it in the heavily-trafficked tier of Louisiana bridges. It is owned and maintained by Local Toll Authority.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 6/9, substructure at 5/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 29.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How CSWY BRIDGE N. B. compares
Live comparison across Louisiana.
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 How the historical reference is calculated.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
- 1965
- Last Reconstructed
- 1969
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 38791.6 m (127275 ft)
- Deck Width
- 9.6 m (31 ft)
- Owner
- Local Toll Authority
- Avg Daily Traffic
- 18,830 vehicles/day
- Structure Number
- 625230123900732
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗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) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether CSWY BRIDGE N. B. 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 CSWY BRIDGE N. B. against other structures in St. Tammany and across Louisiana. Louisiana 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 CSWY BRIDGE N. B.?
CSWY BRIDGE N. B. in St. Tammany, Louisiana has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is CSWY BRIDGE N. B. inspected?
CSWY BRIDGE N. B.'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 18,830 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CSWY BRIDGE N. B. 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 CSWY BRIDGE N. B.?
CSWY BRIDGE N. B. has an NBI inventory load rating of 29.2 metric tons.
Who is responsible for maintaining CSWY BRIDGE N. B.?
CSWY BRIDGE N. B. is owned and maintained by Local Toll Authority.
How old is CSWY BRIDGE N. B. and does age affect safety?
CSWY BRIDGE N. B. was built in 1965, making it 61 years old and last reconstructed in 1969.
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.