Pakistan is one of the most climate-vulnerable countries in the world with extreme weather events like floods, landslides, and heavy rainfall becoming increasingly common. Meanwhile, the province of Khyber Pakhtunkhwa (KP) is particularly susceptible to climate change, with glacial melt accelerating, monsoon patterns shifting, and frequent floods. These climate pressures, combined with the province’s seismic vulnerability, highlight the urgent need for modern, climate-resilient infrastructure.

Floods in KP damaged 107 bridges in 2022 and swept away more than 150 in 2010, cutting off communities, halting rescue efforts, and disrupting lives and livelihoods. Bridges are a lifeline for many remote settlements, being their only link to the world. Yet, despite shifting weather patterns, the approach to building bridges had not evolved. The only formal regulation, the West Pakistan Highway Code of Practice (1967), was based on colonial-era standards. Beyond climate risks, increasing traffic density and heavier vehicle loads have further intensified infrastructure damage.

To address these challenges, Pakistan needed a modern bridge design framework that accounts for contemporary traffic demands, seismic risks, and climate resilience.

The Highway Bridge Design Code 2025 (HBDC-25), developed through support from the Sustainable Energy and Economic Development (SEED) programme, was inaugurated by the Chief Minister KP on 7th March. Speaking at the launch, he emphasised the significance of the initiative, stating

HBDC-25 introduces critical updates to modernise Pakistan’s bridge standards. It adjusts the Live Load Calibration Factor (LLCF) to 1.25 to reflect the on-average 25% heavier loads experienced on Pakistani roads. To improve earthquake resilience, it incorporates tehsil-level seismic hazard maps and follows updated engineering standards. Climate resilience is a priority, with site-specific hydrological studies using Global Climate Change Modelling (GCM) techniques to better prepare for extreme weather and flooding.

The code also enhances inclusivity by requiring ramps, handrails, and walkways, ensuring safer access for women, children, and differently abled people. Additionally, it sets clear guidelines for specialised heavy vehicles, including fatigue trucks and permit vehicles, to extend bridge longevity. These updates align Pakistan’s infrastructure with modern engineering best practices, ensuring bridges are built to last.

To keep up with changing needs, a Standing Code Review Committee will regularly update HBDC-25, integrating new research, technology, and environmental insights. Building on this progress, the KP government plans to introduce a comprehensive Highway Code to strengthen overall road infrastructure management. These efforts mark a bold step toward a safer, more resilient transport network for Pakistan’s future.

SEED is a UK-funded programme that supports climate-resilient, inclusive, and sustainable economic growth in KP. It works closely with the government to improve public investment efficiency and strengthen infrastructure policy and planning, with a focus on climate-resilient infrastructure. SEED is proud to support HBDC-25, a step toward safer, more climate-resilient infrastructure. This initiative reflects SEED’s commitment to sustainability and inclusive economic growth, ensuring that Pakistan builds bridges that stand the test of time.