Honolulu’s bike-share program Biki has lost more than 800 bikes since its launch nearly a decade ago, with vandalism and wear slashing the fleet from a peak of 1,300 bikes to just 478 by the end of April, a 60% decline, according to city spokesperson Travis Ota.

Biki launched as a partnership between the city and operating company Secure Bike Share, modeled after successful bike-share systems in New York City, Boston, and Miami. The system debuted with 1,000 bikes available at more than 100 stations across urban Honolulu, allowing residents and tourists to rent a bike cheaply at one location and return it at another. In its first year, the system proved so popular that Secure Bike Share added another 300 bikes to the fleet, bringing the total to 1,300.

But years of vandalism, theft, and normal wear and tear have steadily eroded the fleet. Ota said that only 478 bikes remained in serviceable condition as of April 30, according to city inventory data.

The shrinking fleet has created what city officials describe as a “doom spiral”: riders often cannot find bikes at stations, which reduces trip revenue, and the revenue shortfall makes it harder for the system to fund repairs and replacements. “People who want to use bikes often can’t find one, making it harder to generate needed revenue,” Ota said.

The system’s struggles come as Honolulu has grappled with other transportation infrastructure challenges, including the rollout of speed cameras and the long-delayed rail project. A Honolulu city council member has publicly questioned whether Biki’s contract with Secure Bike Share should be restructured to better account for fleet management and maintenance obligations.