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Department of Public Work Guidelines For the Placement of Barricades at Construction Sites - Order No. 167, 840

§ Section 1.06 Bid Preference
§ Section 1.07 Placement of Barricades
§ Section 1.08 Protests
Barricading Methods and Material

Federal Register - Temporary Work - Construction Barricade
Examples of Correct and Incorrect Barricading Methods

It is the policy of the Department of Public Works that a safe and accessible path of travel be provided for all pedestrians, including those with disabilities, around and/or through construction sites.

When erecting barricades, the Contractor shall be conscious of the special needs of pedestrians with physical disabilities. Discretion is given to the contractor to provide protection for pedestrians consistent with all local, state, and federal codes, including the Americans with Disabilities Act and the California Building Code, Title 24.

It is recognized that there are various types of construction activities, including both short-term and long-term projects. Some barricading systems are more appropriate for certain types of construction than others.

The following barricading systems described in the attached document are examples of systems which can be used to provide a safe and accessible path of-travel around and through a construction site. They are not intended to be all-inclusive. Any barricading system meeting accessibility standards may be considered.

Section 1.06 Bid Preference
Bid preferences as set forth in Section 12D.8(8)2. of the Administrative Code do not apply to this federally funded Contract.

HRC Form 1, MBEIWBEILBE Bid Preference Application, and HRC Form 2A, Construction must be filled out and submitted with the Bid Proposal by the Bidder. Although bid preference does not apply to federally funded Contracts, this information is collected for statistical reasons.

Section 1.07 Placement of Barricades
The Contractor"s attention is directed to the provisions for safeguarding public safety and conducting its operations for the convenience of the public per Section 108.13 of the Standard Specifications. In addition to the traffic routing and access requirements of Section, 110 of the Standard Specifications, the Contractor shall maintain at least one accessible path of travel around the construction site for persons with disabilities that conforms to the requirements of the State of California Title 24, Part 2, Accessibility Standards and The Americans With Disabilities Act Guidelines. The Contractor shall furnish, erect and maintain all necessary signs, barricades, lighting, fencing, bridging and flaggers that conform to the requirements of San Francisco Department of Public Works Guidelines (Order No. 167,840), which requirements are located in the back of these Special Provisions.

The Contractor shall erect and maintain for the duration of the Contract proper barricades and temporary curb ramps complying with all State and Federal access codes and regulations and the Department of Public Works Curb Ramp Standards Plans at all closed crosswalks and existing closed curb ramps. All changes of level in a path-of-travel that is over 1/4 inch in height, but not exceeding 1/2 inch, shall be beveled at a 45-degree angle to provide a smooth, non-tripping transition.

For all temporary fencing, barricades or other barriers, the Contractor shall provide a solid and continuous bottom rail such as 2x4"s or other material of high contrast attached to the base of the barricade or fencing system to direct blind pedestrians to and through a temporary path-of-travel through the construction area.

The Contractor shall require that no construction materials be stored or placed on the path-of-travel. The Contractor shall maintain the construction barriers in a sound, neat and clean condition, and shall remove all graffiti to the satisfaction of the Engineer, during the life of the contract. The Contractor shall clean public walkways adjoining the construction site of accumulated trash and debris.

The Contractor"s construction operations shall not occupy public sidewalks except where pedestrian protection is provided, following the requirements herein, and with the regulations of public authorities having jurisdiction. The Contractor shall not obstruct free and convenient approach to any fire hydrant, alarm box or utility box.

The Contractor shall remove barriers and enclosures upon completion of the work in accordance with applicable regulatory requirements and to the satisfaction of the Engineer.

Liquidated Damages
The Contractor will be assessed Liquidated Damages in the amount of $1000.00 per day for failing to fulfill the requirements of this Section, "Placement of Barricades".

Section 1.08 Protests
This Section defines the procedure by which a bidder may file a protest against the bid of another bidder.

Time Limitation
A protest should be made as early as possible during the procurement process in order to avoid disruption or unnecessary delay to the procurement process. A protest must be in writing and must be received by the City within ten (10) working days after Bid Opening. Any protest received after the times set forth herein will be rejected. The City may resolve a protest through a written or other formal determination after opportunity to comment is afforded to the bidder whose bid has been protested.

Delivery of Protest
If a protest is mailed, the protesting bidder bears the risk of non-delivery within the required time period. The protest should be transmitted by Certified Mail-Return Receipt Requested or by other means which will objectively establish the date of receipt. Telephone protests will not be considered. Protests shall be transmitted to:

Contract Administrator
Contract Administration Division
Department of Public Works
Room 420, 875 Stevenson Street
San Francisco, CA 94103

Protests not received by the above division within the time and in the manner specified will not be considered.

Barricading Methods and Materials

When using A-frames for defining a path-of-travel, not barricading trenches from vehicular travel, A-frames shall be placed end to end (no spacing between barricade allowed). This will help a person who is blind negotiate a safe path-of-travel. Openings between A-frames will give confusing signals to a person who is blind and using a "walking cane" or "white cane"". If using A-frames, all must be connected in a way to ensure that individual A-frames do not move out of place or separate. As an example of an acceptable connection, A-frames may be connected by 2 x 4"s that are attached to the base of the barricade system.

Barrier Caution Tape
Caution tape does not provide an adequate barricade and cannot be used to delineate path-of-travel (but can be used in other areas to highlight danger. It can be used in conjunction with barricades such as A-frames).

Fencing Material
When using fencing material (i.e., chain link, plastic, etc.) the bottom 3 inches minimum should be solid. This base will act as a guide to blind pedestrians using canes. Walking canes used by blind pedestrians could get caught in fencing. A safe design can be achieved by attaching a solid material (i.e., wood, header bender board, sheet metal, solid rod or rail, etc.) to the bottom portion of the fence. Chosen material should have a high visual contrast to the street/sidewalk surface.

Closed Crosswalks
If a crosswalk is closed due to construction, then curb ramps leading into that crosswalk should also be appropriately barricaded. Temporary curb ramps must be installed in the direction of the crosswalk to replace barricaded ramps. It should be noted that curb ramps are not used solely by persons in wheelchairs. They are also indicators to persons who are blind that a crosswalk exists and that there is a safe path-of-travel to cross the street. Temporary curb ramps should direct blind pedestrians to and through the temporary path-of-travel.

Open Crosswalks
If crosswalks are to remain open during the project then curb ramp areas should be kept free of debris, staging material, equipment, etc.

Any change of level in a path-of-travel which is over 1/4" in. (1/2" maximum) height must be beveled at 45 degree to provide a smooth, non-tripping transition.

NOTE: With the unique nature of each project, certain issues may arise which have not been covered in the above guidelines Each project will have to be reviewed on a case by case basis, to ensure that complete, safe, usable and accessible paths-of-travel are maintained during construction.


This section of the FEDERAL REGISTER contains editional corrections of previously published Presidential, Rule. Proposed Rule, and Notice documents. These corrections are prepared by the Office of the Federal Register. Agency prepared corrections are issued as signed documents and appear in the appropriate document categories elsewhere in the issue.


36 CFR Part 1191

[Docket No 92-2]

RIN 3014 AA12

Americans with Disabilities Act (ADA). Accessibility Guidelines for Buildings and Facilities; State and Loocal Government Facilities

In rule document 9414304 beginning on page 31676. in the issue of Monday. June 20.1994. make the following correction. On page 31676. in the first column. under Comment done: in the last line. December 20.1994. "should read August 19, 1994."

Provided by:
Pacific Disability and Business Technical Assistance Center
440 Grand Avenue, Suite 500 Oakland 94610
(800) 949-4231 (Voice & TDD)
(510) 465-7884

Federal Register - Temporary Work - Construction Barricade

While such spaces do not provide a high degree of accessible features. they are usable by many persons with disabilities. The interim final rule includes the proposed appendix note as a special technical provision.

14 4 Temporary Work (14.6 in the NPRM!)
This section requires that construction and repair work in the public right-of-way that affects pedestrian facilities comply with ADAAG 1.1(4) (Temporary Structures) It further requires that construction sites be protected with barriers against hazards along the pedestrian circulation network and that temporary alternate circulation paths, where provided. be accessible and clearly marked. Appendix notes clarify accessibility requirements along temporary circulation paths.

Comment. The NPRM proposed that temporary work comply with ADAAG 4.1.1(4) (Temporary Structures), which applies the scope and technical requirements of ADAAG, including those for an accessible route, to temporary facilities. The NPRM further proposed that the temporary circulation path from building entrances to accessible street crossings be clearly marked. Several commenters from department of public works noted that it may not always be possible to provide accessible temporary route. Others recommended that an alternate route be required. particularly to building entrance One commenter stated that the cost of providing an accessible alternate route might be excessive in some situations.

Response. Consistent with ADAAG 14.2.1. which requires that public sidewalks, where provided, be accessible. This section states that when a temporary alternate circulation path is provided around construction in the public pedestrian circulation network, the alternate path must be accessible. It also requires that the temporary alternate circulation path comply with alternation standards at ADAAG 14.3 (Alternations). The reference to ADAAG 4.1.1(4) (Temporary Structures) has been removed as unnecessary. The provision in ADAAG 14.1 (General) applies ADAAG 4.1 through 4.35 which includes 4.1.1(4) to ADAAG 14.

Comment. Several commenters noted that where construction involves the entire width of a public sidewalk, some pedestrians may choose to bypass the work by using the adjacent roadway for a short distance. These commenters requested clarification as to whether permitting the use of a street or public sidewalk by pedestrians without disabilities constituted the provision of an alternate circulation path that would require the temporary installation of public sidewalk curb ramps to allow persons using wheelchairs to travel in the street to detour around an obstruction.

Response. Along developed rights-of-way, access to other existing routes may already be available at nearby intersections where pedestrians can choose to cross to another public sidewalk that will provide temporary passage by the construction. This would not require the provision of a temporary alternate circulation path. However, where other existing route are not available and where the sidewalk under construction remains open to pedestrian passage, an accessible temporary path must comply with provisions for alternation in ADAAG 14.3 and must therefore contain a continuous passage connection to public sidewalk curb ramps and street crossings, where necessary for access. Furthermore, the temporary alternate path must be clearly noted and, if where are hazardous conditions along the route, such as excavations construction materials, or equipment, they must be protected by barriers.

Comment. The NPRM proposed that construction sites in the public right-of- way be protected with barriers. Commenters from FHWA noted that MUTCO contained requirements for street and highway construction. including traffic and pedestrian barriers. (DOT/FHWA. "Manual on Uniform Traffic Control Devices," 1986 edition) these commenters recommended that the requirements of this section be coordinated with chapter 6C-9 Barricade Application. which recommends that, where it is not possible to divert pedestrians to other public sidewalks when segment of a pedestrian route is impossible due to construction, barricades be used to define an alternate path.

Response. Conformance with MUTCD standard, which include technical guidelines for barricade design and designation is required as a condition for receiving funding under the Federal Aid Highway Act (23 U.S.C. 101. Et seq.). Therefore, most jurisdictions will comply with MUTCD guidelines. The interim final rule is consistent with MUTCD recommendations and no changes have been made in this requirement.

Comment. The NPRM proposed that construction sites be protected with barriers to warn pedestrians of hazards on the pedestrians circulation network. Many persons with vision impairments and organizations representing them submitted comments supporting the requirement and recommending that barriers be required to be discernable to persons with vision impairments. One commenter provided information on guidelines developed for the installation of scaffolding along public sidewalks in San Francisco.

Response. The appendix notes has been expanded to emphasize the need for barriers that provide both protection and travel cues for bypassing construction hazards along a public sidewalk. A note has been added commending particular attention to scaffolding design.

Technical Assistance
Under both the Architectural Barriers Act and the Americans with Disabilities Act, technical assistance and training for entitles is covered under the acts. The Access Board"s toll-free number allows callers to receive technical assistance and to order publications. The Access Board conducts in-depth training programs to advise and educate the general public, as well as architects and other professionals on the accessibility guidelines and requirements. In addition, the Board is developing two manuals for use by both technical and general audiences. The first is a general manual on ADAAG requirements that will be a useful tool in understanding ADAAG whether for purposes of compliance or as a reference for accessible design. The second is a technical assistance manual on the application of accessibility requirements of public sidewalks, curb ramps, street crossings and related pedestrian facilities in the public right-of-way. This manual will assist public works streets and engineering staff, and similar State and local government agencies responsible for street and sidewalk improvements. The manual will also be of use to architects, civil engineers, landscape architects and other professionals who provide designe services for pedestrian improvements under contract to public agencies and to construction firms who make the physical improvements. The manual on the application of accessibility requirements for public rights-of-ways will be coordinated with the publication of final rules by the Access Board and the Departments of Justice and Transportation. The more general manual on ADAAG will be available as soon as possible after the publication of the final rules.

Examples of Correct and Incorrect Barricading Methods

Photographs A through F depict several examples of correct and incorrect barricading methods.

*Click on the photo to view the larger image.


A. Incorrect Barricading Method

  • "A-Frame" spacing is too wide
  • Caution tape does not provide an adequate barricade or detectable path-of-travel
  • Curb cut access has been blocked

Incorrect Barricding Method A

B. Correct Barricading Method

  • Orange plastic fencing with baseboard provides an easily detectable path-of-travel for persons who are blind/low visioned and using a "white mobility cane" Baseboard will also help eliminate the potential for a person using a "white cane" from getting the cane caught in the fencing mesh.
  • Temporary bridging system (wooden decks/steel plates) provides an accessible path-of-travel for persons using a wheelchair. (Note: the cold patch (asphalt) at the ends of the bridge provides a beveled 1:2 lip of no more than 1/2 inch for a smooth transition).

Correct Barricading Method B

C. Correct Barricading Method
Correct Barricading Method C

  • Baseboard at perimeter of fence supports provides for a well defined path-of-travel edge for persons who are low visioned/blind and using a "white mobility cane". Baseboard also prevents cane from getting caught in fencing mesh. The baseboard is to have a high contrast to the sidewalk/street surface
  • K-Rail further defines the path-of-travel and protects pedestrians from vehicular traffic.
  • Concrete float (temporary ramp) provides for a smooth transition from street to sidewalk for all pedestrians as well as those persons using a wheelchair. (Note: asphalt or other material that will remain in place and support the weight of a person in a wheelchair is acceptable as temporary ramping material)

D. Correct Barricading Method (Curb ramp leading into a closed crosswalk)

  • Entire perimeter of curb ramp is barricaded.
  • Galvanized steel pipe railing provides an effective barricade (other materials providing the same level of barrier are acceptable).
  • Bottom rail is within 12" - 20" above ground surface (this allows for detection by a person who is blind and using a "white mobility cane").
  • Baseboard around perimeter of railing is a minimum 4" above ground surface (this allows for detection by a person who is blind and using a "white mobility cane").

Correct Barricading Method D

E. Incorrect Barricading Method

  • This is an open trench/pit, for a new light pole. An opening in the path- of-travel poses a severe hazard to able bodied pedestrians as well as disabled pedestrians.
  • The perimeter should be completely blocked off with upright barricades and no spacing should exist between the barricades.

Incorrect Barricading Method E

F. Incorrect Barricading Method

  • Caution tape being used to block off entire sidewalk
  • No defined alternative path-of-travel (sending pedestrians into traffic)
  • No solid base for detection by a person who is Low visioned/blind and using a "white mobility cane"
  • No temporary crosswalk was provided for pedestrians using wheelchairs
  • Overall this is an unsafe condition for all pedestrians; able bodied as well as persons with disabilities, and especially persons who are low visioned or blind.

Incorrect Barricading Method F

Last updated: 1/10/2014 10:22:22 AM