US421 TO I74 RAMP
Carrying US421 TO I74 RAMP over SMITH CREEK
0.2 MI.N. JCT.US421N.RAMP, Forsyth, North Carolina
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: US421 TO I74 RAMP
The US421 TO I74 RAMP bridge in Forsyth, North Carolina carries US421 TO I74 RAMP over SMITH CREEK. It was built in 2020, making it 6 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 94.4 meters (310 feet) end to end. Daily traffic averages 100 vehicles, placing it in the lower-traffic tier of North Carolina bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 8/9, superstructure at 8/9, substructure at 8/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 49.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How US421 TO I74 RAMP compares
Live comparison across North Carolina.
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 How the historical reference is calculated.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
- 2020
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 94.4 m (310 ft)
- Deck Width
- 10.1 m (33 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 100 vehicles/day
- Structure Number
- 000000000670673
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (8/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates good at 8/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether US421 TO I74 RAMP 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 US421 TO I74 RAMP against other structures in Forsyth and across North Carolina. North Carolina 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 US421 TO I74 RAMP?
US421 TO I74 RAMP in Forsyth, North Carolina has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is US421 TO I74 RAMP inspected?
US421 TO I74 RAMP'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 100 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US421 TO I74 RAMP 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 US421 TO I74 RAMP?
US421 TO I74 RAMP has an NBI inventory load rating of 49.8 metric tons.
Who is responsible for maintaining US421 TO I74 RAMP?
US421 TO I74 RAMP is owned and maintained by State Highway Agency.
How old is US421 TO I74 RAMP and does age affect safety?
US421 TO I74 RAMP was built in 2020, making it 6 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.