MEASUREMENTS TOTAL LENGTH OF BRIDGE – Highway to Highway..... 12,991 ft. or 2-1/4 miles   LENGTH OF BRIDGE PROPER – Three spans resting on four main piers.. 2,121 ft. Spans   640.5 840 640.5   LENGTH OF VIADUCT APPROACHES – Levee to Bridge.......................... 8,317.5 ft. Arkansas side............................. 1,958 ft. Mississippi side.......................... 6,359.5 ft.   LENGTH OF RAMPS FROM LEVEE TO HIGHWAY CONNECTION Ark. side.................................... 1741 feet Miss. side................................... 1150 feet   GRADES ON APPROACHES – Both sides 4% or 4ft. rise in 100 feet.   CURVES ON APPROACHES – 2 degree curve on Ark. side. 1/2 of one degree on Miss. side HEIGHT OF FLOOR ABOVE HIGHWATER – 65 ft.   HEIGHT OF FLOOR' ABOVE MEAN LOW WATER – 125 ft.   FOUNDATION SETTINGS BELOW BED OF THE RIVER Pier No. 10 - 140 Feet - Total Ht. 265 Feet Pier No. 11 - 133 Feet - Total Ht. 276 Feet Pier No. 12 - 83 Feet - Total Ht. 276 Feet Pier No. 13 - 149 Feet - Total Ht. 246 Feet   LENGTH AND NUMBER OF VIADUCT SPANS 67 — 75 Foot Spans 2 — 143 Foot Spans 12 — 180 Foot Spans 2 — 218 Foot Spans   DEPTH TO WHICH VIADUCT FOUNDATION PILES WERE DRIVEN Timber Piles, Approximately 70 Feet Steel Piles, Approximately 160 Feet Close Window