Raigarh steel slag road enters Guinness World Records as world's longest; Jitendra Singh calls for wider use
On 12 September 2026, a 1.85-km road at Raigarh, Chhattisgarh, built by CSIR-CRRI and Jindal Steel was conferred the Guinness World Record for the world's longest road built with processed steel slag aggregates.
Summary
The Guinness World Record for the 'World's Longest Road Built with Processed Steel Slag Aggregates' was conferred on a 1.85-km road at Raigarh, Chhattisgarh, built jointly by the CSIR-Central Road Research Institute (CSIR-CRRI), New Delhi, and Jindal Steel Limited. Speaking at the event, Union Minister Jitendra Singh said steel slag road technology can cut road construction cost by about 40% and give four times the strength of conventional roads, with major maintenance needed only after about 15 years. He called for taking the technology 'from one project to many projects, from one State to many States'. Earlier uses include a six-lane road to Hazira Port in Gujarat and the NH-66 Mumbai–Goa highway, and a 40-km road in Odisha is next.
Key facts
- Record
- World's longest road built with processed steel slag aggregates — 1.85 km
- Place
- Raigarh, Chhattisgarh
- Built by
- CSIR-CRRI (New Delhi) and Jindal Steel
- Benefits
- ~40% lower cost; 4x strength; major maintenance after ~15 years
- Earlier use
- Hazira Port road (Gujarat); NH-66 Mumbai–Goa
- Next
- 40-km steel slag road in Odisha
Practice MCQs 3 questions
Where is the 1.85-km road that set the Guinness World Record for the world's longest road built with processed steel slag aggregates?
Show answer
Correct answer: A — Raigarh, Chhattisgarh
The 1.85-km record road is at Raigarh, Chhattisgarh.
Which CSIR laboratory developed the steel slag road technology used for the Guinness record road at Raigarh?
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Correct answer: D — CSIR-CRRI
The road was built jointly by the CSIR-Central Road Research Institute (CRRI), New Delhi, and Jindal Steel.
Consider the following claims made by Union Minister Jitendra Singh about steel slag road technology: 1. It can cut road construction cost by about 40%. 2. Roads built with it need major maintenance every three years. Which of the above is/are correct?
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Correct answer: A — 1 only
Only statement 1 is correct. The Minister said the technology can cut cost by about 40% and that such roads may need major maintenance only after nearly 15 years.