Classification

Traffic

Description

These railings are 31 inches high, w-beam rail supported on S3x5.7 steel posts. Posts are spaced 3 ft. 1 1/2 inc. for the T631 railing and 6 ft. 3 in. for the T631LS railing.

Approved test criteria and level

T631: Successfully crash-tested and approved for MASH TL-3. T631LS: Successfully crash-tested and approved for MASH TL2. It cannot be used for bridges with speeds over 45 mph.

Nominal height

31 inches

Minimum height after maintenance overlays

27 inches

Special notes

Do not use these railing for separator railing between traffic lanes and pedestrian walkway. The length of W-beam is the MBGF length of need plus the length of T631/T631LS bridge rail. Therefore, it is continuous across the MBGF and Type T631/T631LS bridge rail and is fabricated in 12’-6” or 25’-0” sections. Note that the fabrication lengths should be taken into consideration when calculating the MBGF length, since the required quantity of MBGF may need to be adjusted until the length of W-beam (MBGF + T631/T631LS) is a multiple of 12’- 6” or 25’-0” . The length of the T631/T631LS is based on the nominal end of bridge rail as shown on the standard and should not be adjusted.