No, not miles.
Bayou St. John had been searched by LE and TES right up to the north side of the Harrison Ave. bridge. One day a volunteer diver from a neighboring parish (an angel, in my book), was loading his boat on the south side of the bridge. By a fluke, iirc, he happened to pick up on Terrilynn's car on sonar.
The problem was a case of mistaken identity of a car. LE was certain TM's car was captured on a traffic camera turning north at a particular intersection (Harrison and Marconi), which would have taken her to a different bridge (either the bridge at Filmore or the one at RE Lee) north of the spot where she was found. So even though the north side of the Harrison Ave bridge was searched, that's where they stopped because no one expected her to be that far south.
Terrilynn Monette case map
In this capture you can see the search concentrated on the area around Filmore Ave and Wisner. The green horses mark where TES searched with sonar.
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All the while, her car rested less than a mile south at Harrison Ave and Wisner. (My red arrows show a
possible route, not necessarily an actual one. Authorities seem to think she was heading east on Harrison.)
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