Three-fourths inch expansion joints shall be spaced at 25 to 30 foot intervals or as otherwise specified. The three-fourths inch expansion joints shall be filled with a three-fourths inch premoulded bituminous expansion joint filler or other approved type and shall extend the entire depth and width of the concrete section. Curb and gutter shall be grooved three-eights inch deep on five-foot centers. (Ord. 8590)