Willow_&_Nicoll_Special_Provisions.pdf
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- Attached to
- Willow & Nicoll Raised Intersection
- Solicitation number
- 2026-ITB-325
- Issued by
- New Haven County, Connecticut
About this file
This is a technical specifications document for a state and local contract opportunity issued by the City of New Haven, Connecticut for the Willow & Nicoll Raised Intersection project (City Project No. 25-108-01). The project is designed to increase safety and accessibility at the intersection of Willow Street and Nicoll Street through demolition and construction of a raised asphalt intersection, concrete sidewalk, reinforced stamped concrete, curbing, bollards, and utility cover adjustments. The specifications document provides detailed construction requirements for multiple line items including Type C catch basins (0' to 10' deep), granite stone curbing in various configurations (standard, curved, and beveled mountable), concrete sidewalks, stamped concrete, municipal police officer services, and maintenance and protection of traffic. The document references the Connecticut Department of Transportation Form 819 (January 2026) as the governing standard specification, with these special provisions serving as amendments and additions to that form. The contractor is responsible for installing type 1 pedestal foundations only, while the City will procure and install rectangular rapid flashing beacon (RRFB) units. Pavement markings and traffic signs will be installed by others and are shown for informational purposes only.
The specifications establish detailed material requirements and construction methodologies aligned with City of New Haven Department of Engineering Construction Standard Details, including specific references to granite curb details (NH-02), catch basin standards (NH-08), and frame and grate specifications (NH-06 and NH-06A). For concrete sidewalk work, the document provides detailed mix design proportions specifying materials such as Portland cement concrete conforming to CTDOT Form 819, with defined aggregate percentages, water-reducer and air-entraining agents, and retarder specifications. Stamped concrete work shall feature an integral brick red color with brick pattern stamping and must be paid on a total square footage basis inclusive of base preparation, processed aggregate base, reinforcing rebar, integral color, surficial stamp, and sealer. Municipal police officer and uniformed flagger services are established as pass-through costs at actual rates paid, with the Maintenance and Protection of Traffic work paid at a contract lump sum price covering all supply, labor, equipment, and services for traffic control devices and lane maintenance. The contractor must submit a Maintenance and Protection of Traffic plan to the Transportation, Traffic & Parking Department for approval and permit prior to work commencement.
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Text version
WILLOW & NICOLL RAISED INTERSECTION
NEW HAVEN, CONNECTICUT
CITY PROJECT NO. 25-108-01
TECHNICAL SPECIFICATIONS
SPECIAL PROVISIONS
VOLUME 1 OF 1
STANDARD SPECIFICATIONS FOR ROADS, BRIDGES, FACILITIES,
AND INCIDENTAL CONSTRUCTION FORM 819 GOVERNS
THESE SPECIAL PROVISIONS ARE IN ADDITION TO
STATE OF CONNECTICUT
DEPARTMENT OF TRANSPORTATION FORM 819
PREPARED BY: CITY OF NEW HAVEN
MAY 2026
INDEX TO SPECIAL PROVISIONS
This index has been prepared for the convenience of those using this contract with the sole express purpose of locating quickly the information contained herein; and no claims shall arise due to omissions, additions, deletions, etc., as this index shall not be considered part of the contract.
ITEM Page No.
NOTICE TO CONTRACTOR - SPECIFICATIONS
NOTICE TO CONTRACTOR – EXCLUSIONS
ITEM # 0586001.10A – TYPE ‘C’ CATCH BASIN – 0’ – 10’ DEEP
ITEM # 0813001A – 5” GRANITE STONE CURBING
ITEM # 0813011A – 5” CURVED GRANITE STONE CURBING
ITEM # 0816001A – 5” BEVELED MOUNTABLE GRANITE STONE CURBING
ITEM # 0816002A – 5” BEVELED MOUNTABLE CURVED GRANITE STONE CURBING 6
ITEM # 0921001A – CONCRETE SIDEWALK
ITEM # 0921007A – STAMPED CONCRETE
ITEM # 0970006A – MUNICIPAL POLICE OFFICER
ITEM # 0971001A – MAINTENANCE AND PROTECTION OF TRAFFIC
NOTICE TO CONTRACTOR - SPECIFICATIONS
The Contract shall conform to CTDOT Form 819 dated January 2026. The Contractor is advised that the specifications have been amended as described in these bid documents.
NOTICE TO CONTRACTOR – EXCLUSIONS
Pavement markings and traffic signs will be installed by others. Pavement markings are shown for informational purposes only.
RRFB units to be procured and installed by the City. Contractor to install type 1 pedestal foundations only.
ITEM # 0586001.10A – TYPE ‘C’ CATCH BASIN – 0’ – 10’ DEEP
5.86.02A MATERIALS
Any material mentioned on City of New Haven Department of Engineering Construction
Standard Details shall adhere to the 819. Where a material is not described in 819, refer further to the City standard details as described below.
Granite curb inlets shall adhere to New Haven construction standard details NH-02 Granite Curb
Details and NH-08 Standard Catch Basin Type “C”.
Catch basin frames and grates shall adhere to New Haven construction standard details NH-06
Standard Catch Basin Frame and Grate and NH-06A Modified Catch Basin Frame and Grate.
5.86.03A CONSTRUCTION METHODS
Curb inlet structures and catch basin frames and grates will be installed per NH-08 Standard
Catch Basin Type “C”. Curb inlet structures which are to be replaced or reset shall be removed from their present beds, the walls or sides shall be rebuilt to conform to the requirements of the new construction and shall be set or reset as per NH-08 Standard Catch Basin Type “C” or as directed by the Engineer.
Type ‘C’ Catch Basin Top shall include supplying and setting a new catch basin frame and grate per NH-08 Standard Catch Basin Type “C”, exclusive of and not including the inlet structure.
Resetting of Catch Basins shall include resetting an existing catch basin frame and grate.
ITEM # 0813001A – 5” GRANITE STONE CURBING
ITEM # 0813011A – 5” CURVED GRANITE STONE CURBING
ITEM # 0816001A – 5” BEVELED MOUNTABLE GRANITE STONE
CURBING
ITEM # 0816002A – 5” BEVELED MOUNTABLE CURVED GRANITE
STONE CURBING
Article 8.13.03 – Construction Methods is amended as follows:
5. Backfilling at Street
Stone curbing installed along the road shall be backfilled along the road side of the curbing with
Class C concrete to an elevation of 2 inches below the final grade of the surface course. The top 2 inches shall be backfilled with HMA S0.5 to final grade. This work will not be measured for payment and is incidental to the unit price for Granite Stone Curbing.
Contractor shall be required to submit shop drawings of all proposed curb, vertical and beveled, for approval. Example shown below of desired beveled curbing style for the medians, which is located within the City at Burr St & Dean St.
ITEM # 0921001A – CONCRETE SIDEWALK
Article 9.21.02 – Materials is amended as follows:
Delete the first sentence in the first paragraph and replace with the following:
Materials for this work shall meet the following requirements:
Portland cement concrete shall be in conformance with the requirements of the Connecticut
Department of Transportation Standard Form 819 Materials Section M.03, and adhere to the mix design proportions and data below.
MATERIAL DATA
Slag
Flyash
3/8" Stone
Headwaters
ASTM C-33
ASTM C-33
ASTM C-33
Material
Water
Cement
3/4" Stone
1/2" Stone
Concrete Sand
Water Reducer
Air Entraining Agent
Retarder
ASTM C260
Source/Type
Domestic supply
LaFarge
LaFarge Newcem
ASTM C494 Type B&D
Specific Gravity
1.00
3.15
2.90
2.90
2.67
2.93
2.42
2.90
% AbsorptionUnit Weight
ASTM C-33
ASTM C494 Type A&F
MIX DESIGN PROPORTIONS
Material Proportions (SSD) Aggregate Percentages
Volume Weight 3/4" Stone 27.81%
Water 4.57 Cu. Ft. 285 lb/cy 1/2" Stone 13.93%
Cement 2.33 Cu. Ft. 458 lb/cy 3/8" Stone 13.93%
Newcem 0.84 Cu. Ft. 153 lb/cy Sand 44.32%
Flyash 0.00 Cu. Ft. lb/cy
% Air Entrained 1.35 Cu. Ft. 5.00% Total 100.00%
Total Aggregate 17.87 Cu. Ft. 3120 lb/cy
3/4" Stone (lbs,ssd) 4.97 Cu. Ft. 900 lb/cy 1/2" Stone (lbs,ssd) 2.49 Cu. Ft. 450 lb/cy
3/8" Stone (lbs,ssd) 2.49 Cu. Ft. 450 lb/cy Concrete Sand (lbs,ssd) 7.92 Cu. Ft. 1320 lb/cy
Total 26.96 Cu. Ft. lb/cy
Water Reducer 3.0 oz/cwt 36.0 oz/cy A.E.A. 0.5 oz/cwt 5.0 oz/cy
Retarder 0.0 oz/cy
ITEM # 0921007A – STAMPED CONCRETE
This item shall conform to the concrete section shown in Detail STD-NH-43C as included in the plan set, except that the outer curbs shall be beveled granite stone curbing and not the integral concrete curb as shown. Detail is included to show the concrete section and reinforcing only.
The stamped concrete shall have an integral brick red color and a brick pattern stamped on the surface. Contractor shall submit details and shop drawings as necessary for the Engineer’s approval showing the stamped concrete construction process to be used.
This item shall be paid for at total SF of stamped concrete installed, inclusive of base preparation, processed aggregate base, reinforcing rebar, integral color, and surficial stamp and sealer, or any other item incidental thereto.
ITEM # 0970006A – MUNICIPAL POLICE OFFICER
Uniformed Law Enforcement Personnel is to be a pass-through cost to the City at the Actual rate paid for. As such, Article 9.70.05 shall remove reference to an additional reimbursement in section
1 of the aforementioned Article.
This item shall also include uniformed flaggers as a pass-through cost should uniformed law enforcement personnel not be available.
ITEM # 0971001A – MAINTENANCE AND PROTECTION OF TRAFFIC
Article 9.71.05 – Basis of Payment is amended as follows
When the item of “Maintenance and Protection of Traffic” appears in the Contract, this work will be paid for at the Contract lump sum price for “Maintenance and Protection of Traffic.” This price shall include all costs for supply, labor, equipment and services involved in the erection, maintenance, moving, adjusting, cleaning, relocating and storing of signs, barricades, drums, traffic cones, and delineators furnished by the Contractor as well as all costs of labor and equipment involved in the maintenance of traffic lanes and detours, including temporary pavement markings.
Contractor shall submit a MPT plan to the Transportation, Traffic & Parking Department for approval and permit.
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