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West Pokot, Kenya (CNN) -- More than 13 years after his parents drowned in a flash flood, David Kakuko is at the Moruny River, building a bridge that might have prevented their deaths.
The hanging footbridge will provide safe passage over the Moruny, a frequently flooded waterway in West Pokot, Kenya.
"Before the bridge, there [were] so many people, so many who lost their lives," said Kakuko, 32. "I know, because I have no parents. I have no parents, because this river took them."
Kakuko is working alongside other local residents and Harmon Parker, a master mason who has been building bridges through Kenya's mountainous terrain since 1997.
Parker, a Lexington, Kentucky, native who came to Kenya in 1989, has seen firsthand how flash floods -- and the threat of predators such as crocodiles and hippos -- can make rivers impassable in isolated communities.
"I've worked all over Kenya," said Parker, 54. "And every community [has] a story of ... loved ones lost."
When Parker arrived in Kenya as a young missionary, he befriended Jay Hindson, a fellow development worker who introduced him to a bridge build in 1996. The experience changed the course of his life.
"It was a plea from the community," Parker recalled. "I saw that building a bridge could change lives and transform communities."
Parker has been building bridges ever since, and in 2003 he founded the nonprofit organization Bridging the Gap. The organization oversees the building of bridges that not only save lives but connect isolated villagers to resources that can improve their way of life.
"When it floods, people really suffer not being able to get to the clinic or the market or to their school," Parker said. "Like every people, they have dreams. They want to prosper."
Since 1997, Parker has helped build 45 bridges in Kenya. He estimates they've affected tens of thousands of lives, but he insists his work is not about the numbers.
"I have built many bridges in very remote areas for the 'few and the needy' that a larger organization may not consider," he said. "Knowing this bridge will probably save at least one life is what makes me tick. ... I build bridges because I want to save lives, lives that I will never know about."
Parker's hanging footbridges are simple in design, with an average length of 120 feet and an average cost of about $6,000. They are built using basic materials and local tools so villagers can maintain them and make repairs when needed.