SR91 NB TPK 175.4
Carrying SR91 NB TPK 175.4 over OUTFALL CANAL
9.3 mi S of Ft Drum Plz, Indian River, Florida
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SR91 NB TPK 175.4
The SR91 NB TPK 175.4 bridge in Indian River, Florida carries SR91 NB TPK 175.4 over OUTFALL CANAL. It was built in 1963, making it 63 years old today. The structure is built primarily of prestressed concrete and spans 5 sections, stretching 43.2 meters (142 feet) end to end. Daily traffic averages 18,350 vehicles, placing it in the heavily-trafficked tier of Florida bridges. It is owned and maintained by State Toll Authority.
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. Its NBI inventory load rating is 46.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SR91 NB TPK 175.4 compares
Live comparison across Florida.
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 How the historical reference is calculated.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
- 1963
- Material
- Prestressed Concrete
- Number of Spans
- 5
- Structure Length
- 43.2 m (142 ft)
- Deck Width
- 12.1 m (40 ft)
- Owner
- State Toll Authority
- Avg Daily Traffic
- 18,350 vehicles/day
- Structure Number
- 880065
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether SR91 NB TPK 175.4 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 SR91 NB TPK 175.4 against other structures in Indian River and across Florida. Florida 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 SR91 NB TPK 175.4?
SR91 NB TPK 175.4 in Indian River, Florida 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 SR91 NB TPK 175.4 inspected?
SR91 NB TPK 175.4'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 18,350 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SR91 NB TPK 175.4 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 SR91 NB TPK 175.4?
SR91 NB TPK 175.4 has an NBI inventory load rating of 46.7 metric tons.
Who is responsible for maintaining SR91 NB TPK 175.4?
SR91 NB TPK 175.4 is owned and maintained by State Toll Authority.
How old is SR91 NB TPK 175.4 and does age affect safety?
SR91 NB TPK 175.4 was built in 1963, making it 63 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.