N3937 (C ST)
Carrying N3937 (C ST) over CREEK
C ST. 0.2N OF SH 20, Tulsa, Oklahoma
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: N3937 (C ST)
The N3937 (C ST) bridge in Tulsa, Oklahoma carries N3937 (C ST) over CREEK. It was built in 1920, making it 106 years old today. The structure is built primarily of steel and spans 2 sections, stretching 13.8 meters (45 feet) end to end. Daily traffic averages 224 vehicles, placing it in the lower-traffic tier of Oklahoma bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 4/9, substructure at 5/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 22.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How N3937 (C ST) 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 How the historical reference is calculated.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
- 1920
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 13.8 m (45 ft)
- Deck Width
- 7.0 m (23 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 224 vehicles/day
- Structure Number
- 009070000000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
N3937 (C ST) is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare N3937 (C ST) against other structures in Tulsa 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 N3937 (C ST)?
N3937 (C ST) in Tulsa, Oklahoma has a deck rating of 6/9, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is N3937 (C ST) inspected?
N3937 (C ST)'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 224 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N3937 (C ST) is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for N3937 (C ST)?
N3937 (C ST) has an NBI inventory load rating of 22.7 metric tons.
Who is responsible for maintaining N3937 (C ST)?
N3937 (C ST) is owned and maintained by City/Municipal Highway Agency.
How old is N3937 (C ST) and does age affect safety?
N3937 (C ST) was built in 1920, making it 106 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.