I-77 & RAMP ON/OFF
Carrying I-77 & RAMP ON/OFF over UNNAMED_STREAM
7 MI NE OF COLUMBIA, Richland, South Carolina
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I-77 & RAMP ON/OFF
The I-77 & RAMP ON/OFF bridge in Richland, South Carolina carries I-77 & RAMP ON/OFF over UNNAMED_STREAM. It was built in 1995, making it 31 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 6.7 meters (22 feet) end to end. Daily traffic averages 82,700 vehicles, placing it in the heavily-trafficked tier of South Carolina bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 7/9. 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 97.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I-77 & RAMP ON/OFF compares
Live comparison across South 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 How the historical reference is calculated.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
- 1995
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 6.7 m (22 ft)
- Deck Width
- 45.7 m (150 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 82,700 vehicles/day
- Structure Number
- 000000000008911
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 I-77 & RAMP ON/OFF 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 I-77 & RAMP ON/OFF against other structures in Richland and across South Carolina. South 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 I-77 & RAMP ON/OFF?
I-77 & RAMP ON/OFF in Richland, South Carolina on the FHWA's 0–9 scale.
How often is I-77 & RAMP ON/OFF inspected?
I-77 & RAMP ON/OFF'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 82,700 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I-77 & RAMP ON/OFF 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 I-77 & RAMP ON/OFF?
I-77 & RAMP ON/OFF has an NBI inventory load rating of 97.2 metric tons.
Who is responsible for maintaining I-77 & RAMP ON/OFF?
I-77 & RAMP ON/OFF is owned and maintained by State Highway Agency.
How old is I-77 & RAMP ON/OFF and does age affect safety?
I-77 & RAMP ON/OFF was built in 1995, making it 31 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.