Twenty-six-year-old Christina McQuaid of Leonia broke her ankle early Saturday after getting her foot stuck in a roadway grate.
But since the bridge's lower roadway doesn't have sidewalks and shouldn't be accessible to pedestrians, it's unclear how she got there.
Investigators believe she may have been a passenger in a car and was dropped off somewhere along the bridge, but that had not been confirmed that as Saturday afternoon.
The Record (http://bit.ly/KLj75w) reports McQuaid told authorities she went out for drinks in the Bronx, N.Y., on Friday night, then took a shuttle to Riverside Park in New York.
She eventually decided to walk across the bridge to get home.
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