STATE HIGHWAY 58A
Carrying STATE HIGHWAY 58A over CANTON LAKE SPILLWAY
2 MI N. OF CANTON, Blaine, Oklahoma
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
STATE HIGHWAY 58A in Blaine, Oklahoma sits above 8% of rated Oklahoma bridges on inventory load rating (17 t), while its 1948 build year is earlier than 79% of Blaine's recorded-year cohort (272 bridges).
STATE HIGHWAY 58A in Blaine, Oklahoma is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1948, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure OK:CEPSWTOKCANTONL
PRE-1950 · CONCRETE · LONG-SPAN-RUN · TIED-CTRL · LOCAL-ADT · LIGHT-LOAD · CAT-FAIR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- LONG-SPAN-RUN 16 spans
- TIED-CTRL Tied control
- LOCAL-ADT Local ADT
- LIGHT-LOAD Light load
- CAT-FAIR Fair
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
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.
How STATE HIGHWAY 58A compares
Age against the county: built in 1948, earlier than 215 of Blaine's 272 bridges with a recorded construction year (79%), against a county median build year of 1982. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Oklahoma bridges with a recorded inventory load rating (22,909 of 22,917 rated).
STATE HIGHWAY 58A vs every rated Oklahoma bridge
Inventory load rating (metric tons), FHWA NBI, this state
17 Top 92% higher than 8% of 22,909 bridges
rated Oklahoma bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Blaine inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 272 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
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
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.
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 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.