The final protester has been safely lowered from the Fred Hartman Bridge. Thank you to our community and all our partners. @houstonpolice @HoustonFire @USCG @BaytownFireDept #hounews pic.twitter.com/DwsLi4Ncs4 — HCSOTexas (@HCSOTexas) September 13, 2019

BREAKING: deputies are arresting protesters who repelled off the Fred Hartman Bridge @abc13houston https://t.co/dsx2aMOrWD pic.twitter.com/6sRl36G6PJ — Marla Carter (@MarlaABC13) September 12, 2019

Deputies are working with @HoustonFire and @BaytownFireDept to repel down to make contact with protesters hanging from the Hartman Bridge. Goal is to bring them to awaiting boats safely. #hounews pic.twitter.com/kXhDCJFM8B — HCSOTexas (@HCSOTexas) September 12, 2019

Deputies have begun placing protestors on the Fred Hartman Bridge into custody and placing them under arrest. The operation is ongoing. #hounews pic.twitter.com/vUYxySDB9C — HCSOTexas (@HCSOTexas) September 12, 2019

HCTRA is waiving tolls at the Sam Houston Ship Channel bridge (between 225 and I-10) until 8:00 pm to provide passage for drivers in the area affected by the closure of the #FredHartman bridge. #safetravels — HCTRA (@HCTRA) September 12, 2019

EMBED >More News Videos Greenpeace protesters hang from Fred Hartman Bridge

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BAYTOWN, Texas (KTRK) -- The Coast Guard has reopened the Houston Ship Channel after an hours-long Greenpeace USA protest that ended with the demonstrators being arrested.The final protester was lowered to safety from the Fred Hartman Bridge overnight.Harris County Precinct 8 deputy constables responded to a crash on the bridge around 6:30 a.m. Thursday. When they arrived, they learned about the Greenpeace protest that was unfolding.In total, 23 protesters were involved by forming a blockade over the Fred Hartman Bridge ahead of the third 2020 Democratic debate, forcing the closure of the Houston Ship Channel and snarling traffic in the area.The Harris County Sheriff's Office began taking protesters into custody Thursday evening.HCSO worked with Houston and Baytown fire departments to rappel down and make contact with protesters hanging from the bridge.Eleven people rappelled from the bridge. There were also people acting as "spotters" who were located along the top of the bridge to assist them.The spotters were also taken into custody.Their actions were a call to leaders to imagine a world beyond fossil fuels and to embrace a transition to renewable energy, the group's leaders say.Around 4 p.m. Thursday, military personnel arrived at the scene, hoping to bring the blockade to a peaceful end.It's unknown what specific charges the protesters could face.