New York state standard specifications require delineation on temporary barrier as follows: "The contractor shall provide and maintain delineation on the temporary barriers. This delineation shall … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Temporary Concrete Barriers
Conditions for using temporary concrete barriers
In Ohio, temporary concrete barriers are used under following conditions: major pavement dropoffs and two-way traffic separation. … [Read more...] about Conditions for using temporary concrete barriers
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Standard 701321-02 shows Illinois' basic object marker barrier wall attachment. Most designers are now opting for the Detail A option using barrier wall reflectors. This marker attachment design has … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Temporary Movable (“Zipper”) Barrier systems in work zones
California has used the "zipper" barrier a few times. However, no standard has yet been developed for its use. … [Read more...] about Temporary Movable (“Zipper”) Barrier systems in work zones
Temporary Movable (“Zipper”) Barrier systems in work zones
New York has used movable concrete barrier. The New York Thruway Authority has a permanent movable barrier operation on the Tappan Zee Bridge carrying I-87 and I-287 across the Hudson River. Lanes are … [Read more...] about Temporary Movable (“Zipper”) Barrier systems in work zones
Temporary Movable (“Zipper”) Barrier systems in work zones
NCDOT uses movable barrier quite extensively in its work zones, mostly on interstate rehabilitation projects. The barrier system was used on I-95 to close one lane Monday thru Thursday and open it up … [Read more...] about Temporary Movable (“Zipper”) Barrier systems in work zones