STATE HIGHWAY 58A
Carrying STATE HIGHWAY 58A over CANTON LAKE SPILLWAY
2 MI N. OF CANTON, Blaine, Oklahoma
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: STATE HIGHWAY 58A
The STATE HIGHWAY 58A bridge in Blaine, Oklahoma carries STATE HIGHWAY 58A over CANTON LAKE SPILLWAY. It was built in 1948, making it 78 years old today. It was last reconstructed in 2013, extending its service life. The structure is built primarily of concrete and spans 16 sections, stretching 239.6 meters (786 feet) end to end. Daily traffic averages 730 vehicles, placing it in the lower-traffic tier of Oklahoma bridges. It is owned and maintained by Army Corps of Engineers.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 5/9, substructure at 5/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 16.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How STATE HIGHWAY 58A compares
Live comparison across Oklahoma.
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 How the historical reference is calculated.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
- 1948
- Last Reconstructed
- 2013
- Material
- Concrete
- Number of Spans
- 16
- Structure Length
- 239.6 m (786 ft)
- Deck Width
- 9.1 m (30 ft)
- Owner
- Army Corps of Engineers
- Avg Daily Traffic
- 730 vehicles/day
- Structure Number
- CEPSWTOKCANTONL
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
This page shows what the last federal inspection recorded, not whether STATE HIGHWAY 58A 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 STATE HIGHWAY 58A against other structures in Blaine and across Oklahoma. Oklahoma 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 STATE HIGHWAY 58A?
STATE HIGHWAY 58A in Blaine, Oklahoma has a deck rating of 6/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is STATE HIGHWAY 58A inspected?
STATE HIGHWAY 58A'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 730 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. STATE HIGHWAY 58A 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 STATE HIGHWAY 58A?
STATE HIGHWAY 58A has an NBI inventory load rating of 16.5 metric tons.
Who is responsible for maintaining STATE HIGHWAY 58A?
STATE HIGHWAY 58A is owned and maintained by Army Corps of Engineers.
How old is STATE HIGHWAY 58A and does age affect safety?
STATE HIGHWAY 58A was built in 1948, making it 78 years old and last reconstructed in 2013.
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.