SC 31 SB
Carrying SC 31 SB over SC 90
22.55 MI NE OF SOCASTEE, Horry, South Carolina
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SC 31 SB in Horry, South Carolina sits above 85% of rated South Carolina bridges on inventory load rating (43 t), while its 2002 build year is earlier than 19% of Horry's recorded-year cohort (479 bridges).
SC 31 SB in Horry, South Carolina is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 2002, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure SC:000000000009788
POST-2000 · PRESTRESS · MULTI-SPAN · TIED-CTRL · HEAVY-ADT · HEAVY-LOAD · CAT-GOOD
- POST-2000 2000+
- PRESTRESS Prestressed concrete
- MULTI-SPAN 3 spans
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: SC 31 SB
The SC 31 SB bridge in Horry, South Carolina carries SC 31 SB over SC 90. It was built in 2002, making it 24 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 67.4 meters (221 feet) end to end. Daily traffic averages 16,650 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 a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How SC 31 SB compares
Age against the county: built in 2002, earlier than 90 of Horry's 479 bridges with a recorded construction year (19%), against a county median build year of 1994. This is one of the newer structures in its county.
Live comparison across South Carolina bridges with a recorded inventory load rating (9,483 of 9,490 rated).
SC 31 SB vs every rated South Carolina bridge
Inventory load rating (metric tons), FHWA NBI, this state
43 Top 15% higher than 85% of 9,483 bridges
rated South Carolina bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Horry inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 479 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 2002
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 67.4 m (221 ft)
- Deck Width
- 18.0 m (59 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 16,650 vehicles/day
- Structure Number
- 000000000009788
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
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 SC 31 SB 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 SC 31 SB against other structures in Horry 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 SC 31 SB?
SC 31 SB in Horry, South Carolina has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is SC 31 SB inspected?
SC 31 SB'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 16,650 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SC 31 SB 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 SC 31 SB?
SC 31 SB has an NBI inventory load rating of 43.4 metric tons.
Who is responsible for maintaining SC 31 SB?
SC 31 SB is owned and maintained by State Highway Agency.
How old is SC 31 SB and does age affect safety?
SC 31 SB was built in 2002, making it 24 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.