California Highway Patrol (AP Photo/Chris Carlson, File)

What initially appeared to be a tiny home stuck on the Bay Bridge captured commuters’ attention after it caused a traffic back-up on Wednesday afternoon.

The large object was in fact two porta-potties — painted to look like tiny homes — that had fallen off the trailer of a Ford pickup truck, according to California Highway Patrol.

#BayBridge: there is a tiny house that fell off a trailer. The left lane is blocked on the lower deck and traffic is just crawling through #SanFrancisco on northbound 101 and eastbound 80. #KCBSTraffic. Photo: Phone forcer Paul pic.twitter.com/wE4dPpdn1M

The agency said that the blockage was first reported at 1:17 p.m. The pickup and its trailer were blocking the number one lane going westbound on I-80 said Vanessa Godoy, a substitute public information officer for California Highway Patrol.

Within an hour, a private tow truck took the trailer off the scene. No injuries or accidents were reported.

The reason for the issue was that the connector portion between the truck and the trailer had snapped, said Godoy.

All traffic was back to its normal conditions by Wednesday evening, CHP said.

Annie Vainshtein (she/her) is a San Francisco Chronicle staff writer. Email: avainshtein@sfchronicle.com. Twitter: @annievain

Annie is a reporter for The San Francisco Chronicle. She previously was a digital producer for The Chronicle's Datebook section. She graduated from Cal Poly, San Luis Obispo in 2017 with a degree in journalism. During her time there, she spearheaded a culture column, produced radio pieces for NPR-affiliate station KCBX, and was a DJ and writer for KCPR, the campus radio station. Before joining the Chronicle, she was an associate producer at SFGATE and interned at VICE and Flood Magazine. She's particularly interested in communities and scenes that are often misunderstood.