U.S. 177 SD
Carrying U.S. 177 SD over CREEK
SD UNDER E ABUT., Lincoln, Oklahoma
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: U.S. 177 SD
The U.S. 177 SD bridge in Lincoln, Oklahoma carries U.S. 177 SD over CREEK. It was built in 1953, making it 73 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 7.0 meters (23 feet) end to end. Daily traffic averages 24 vehicles, placing it in the lower-traffic tier of Oklahoma bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 32.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How U.S. 177 SD 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 How the historical reference is calculated.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
- 1953
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 7.0 m (23 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 24 vehicles/day
- Structure Number
- 128720000000000
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 U.S. 177 SD 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 U.S. 177 SD against other structures in Lincoln 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 U.S. 177 SD?
U.S. 177 SD in Lincoln, Oklahoma on the FHWA's 0–9 scale.
How often is U.S. 177 SD inspected?
U.S. 177 SD'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 24 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. U.S. 177 SD 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 U.S. 177 SD?
U.S. 177 SD has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining U.S. 177 SD?
U.S. 177 SD is owned and maintained by State Highway Agency.
How old is U.S. 177 SD and does age affect safety?
U.S. 177 SD was built in 1953, making it 73 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.