The Mantes-Gassicourt Highway Bridge over the Seine came under attack of the 391st at 1147 Hours on May 30. The mission was directed by Field Order 78-338, 99th Bomb Wing, and thirty-eight planes were dispatched at 0930 hours, each carrying two 2000-pound General Purpose Bombs.

Bombing was done by flights of sixes, with the following results interpreted from the strike photos:

1st Six: Poor. Bombs fell approximately 1200 feet West of the desired M.P.I

2nd Six: Excellent. In a tight concentration, bursts occurred on and beside the M.P.I, with hits on the bridge.

3rd Six: Excellent. A scattered pattern of bombs landed on and next to the desired M.P.I, with hits on the bridge.

1st Six: Excellent. Also falling in scattered concentration bombs fell on and beside the desired M.P.I, scoring hits on the bridge.

2nd Six: No photo coverage. Oil on the lenses. (Group Bombardier reported excellent results, on the basis of visual observation)

3rd Six: Unknown. Smoke in area prevented adequate coverage.

There were no losses, damage or casualties, and the planes returned to base at 1323 hours.