FHWA NBI 2024 Inspection record Public-domain dataset

S-402

Carrying S-402 over TRIB TO RICHLAND CREEK

2.9 MI W OF SENECA, Oconee, South Carolina

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
97 t Inventory load rating

Bridge Snapshot: S-402

The S-402 bridge in Oconee, South Carolina carries S-402 over TRIB TO RICHLAND CREEK. It was built in 2010, making it 16 years old today. The structure is built primarily of concrete and spans 1 section, stretching 9.1 meters (30 feet) end to end. Daily traffic averages 10,500 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 8/9. The weakest component sits in good condition. All reported major components score above the Poor 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 S-402 compares

▲ 67.4
Load rating vs South Carolina average (29.8 t)
Top 1%
Higher load rating than 99% of South Carolina bridges
119
Bridges in Oconee · 14 in Poor condition
S-402 97.2 t
South Carolina average 29.8 t

Live comparison across South Carolina.

Historical Sufficiency Rating

PlainBridge-computed
96.5 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
Essentiality /15
12.5
Special reductions
−1.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Culvert
8/9
Good (7–9)
Inventory Load Rating
97.2 t
NBI inventory level (metric tons)
Overall Condition
Good

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
2010
Material
Concrete
Number of Spans
1
Structure Length
9.1 m (30 ft)
Deck Width
45.7 m (150 ft)
Owner
State Highway Agency
Avg Daily Traffic
10,500 vehicles/day
Structure Number
000000000010334

How to read this record

This page shows what the last federal inspection recorded, not whether S-402 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 S-402 against other structures in Oconee 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 S-402?

S-402 in Oconee, South Carolina on the FHWA's 0–9 scale.

How often is S-402 inspected?

S-402'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 10,500 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. S-402 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 S-402?

S-402 has an NBI inventory load rating of 97.2 metric tons.

Who is responsible for maintaining S-402?

S-402 is owned and maintained by State Highway Agency.

How old is S-402 and does age affect safety?

S-402 was built in 2010, making it 16 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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.