U.S. 377
Carrying U.S. 377 over SALT CREEK
6.9 MI.S JCT SH 59, Seminole, Oklahoma
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: U.S. 377
The U.S. 377 bridge in Seminole, Oklahoma carries U.S. 377 over SALT CREEK. It was built in 2019, making it 7 years old today. The structure is built primarily of prestressed concrete and spans 5 sections, stretching 152.9 meters (502 feet) end to end. Daily traffic averages 5,000 vehicles, placing it in the moderately-trafficked tier of Oklahoma bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 9/9, superstructure at 9/9, substructure at 8/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 52.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How U.S. 377 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 How the historical reference is calculated.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
- 2019
- Material
- Prestressed Concrete
- Number of Spans
- 5
- Structure Length
- 152.9 m (502 ft)
- Deck Width
- 14.1 m (46 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 5,000 vehicles/day
- Structure Number
- 269160000000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 9/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) rates good at 9/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether U.S. 377 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. 377 against other structures in Seminole 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. 377?
U.S. 377 in Seminole, Oklahoma has a deck rating of 9/9, superstructure rating of 9/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is U.S. 377 inspected?
U.S. 377'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 5,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. U.S. 377 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 U.S. 377?
U.S. 377 has an NBI inventory load rating of 52.6 metric tons.
Who is responsible for maintaining U.S. 377?
U.S. 377 is owned and maintained by State Highway Agency.
How old is U.S. 377 and does age affect safety?
U.S. 377 was built in 2019, making it 7 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.