Contracts
NYSDOT's highway record-plan index: 32,854 contracts since 1900, newest award first.
Contracts whose index row names NY 231.
- D256219Awarded Aug 19, 1994VANDERBILT MOTOR PARKWAY TO N.S.P.,;INTERSECTION IMPROVEMENTS,;RT. 231;NY 231 · Babylon (town), Huntington (town) · Suffolk · PIN 0011.40 · 72 sheets indexed
- D252377Awarded Apr 18, 1988TRAFFIC SIGNAL INSTALLATION AT 9 LOCATIONS;NY 101, NY 106, NY 25, NY 110, NY 111, NY 112, NY 231, NY 25A, NY 347, NY 454 · Flower Hill (village), North Hempstead (town), Oyster Bay (town), Brookville (village), Muttontown (village), New Hyde Park (village), Mineola (village), Westbury (village), Old Westbury (village), Huntington (town), Islip (town), Smithtown (town), Village Of The Branch (village), Brookhaven (town), Babylon (town), Northport (village), Islandia (village) · Nassau and others · PIN 0803.15 · 25 sheets indexed
- D500145Awarded Mar 28, 1985LANDSCAPING RT'S. 27 & 231;NY 231, NY 27, NY 27A · Islip (town), Babylon (village), Brightwaters (village) · Suffolk · PIN 0058.54 · 21 sheets indexed
- D251286Awarded Oct 22, 1984A.C. RESURFACING ON RT. 231;NY 231, NY 27 · Islip (town), Babylon (village), Huntington (town), Brightwaters (village) · Suffolk · PIN M004.00
- D250775Awarded Dec 8, 1983SAFETY IMPROVEMENTS ON RT. 231, R.C.C.P. WIDENING; SIGNALSNY 231 · Babylon (town), Huntington (town) · Suffolk · PIN 0011.39 · 49 sheets indexed
- BRIDGE DECK REHAB. ON RT. 231 OVER JOHN STREET;NY 231 · Islip (town), Babylon (village) · Suffolk · PIN 0011.31 · 13 sheets indexed
- D250124Awarded May 13, 1982VARIOUS SHS.;THERMOPLASTIC PAVEMENT MARKINGS ON RTS. 25A, 112, 24, 107, 25, 27, 25B, 106, 102, 231, 109, 111,; PAVEMENT MARKINGSNY 25A, NY 112, NY 24, NY 107, NY 25, NY 27, NY 25B, NY 106, NY 102, NY 231, NY 109, NY 111 · Nassau and others · PIN 0799.04 · 13 sheets indexed
- D250057Awarded Mar 25, 1982TRAFFIC SIGNALS 7 INTERSECTIONS IN NASSAU, RTS. 25A,27,231,106,107,24 11 INTERSECTIONS IN SUFFOLK;NY 25A, NY 27, NY 231, NY 106, NY 107, NY 24 · Nassau and others · PIN 0801.90 · 27 sheets indexed
- D250001Awarded Mar 5, 1982CLEANING AND SEALING TRANSVERSE AND LONGITUDINAL CONC. PAVEMENT JOINTS ON RT. 231 AND RT. 135;NY 135, NY 231 · Hempstead (town), Oyster Bay (town), Islip (town), Babylon (village) · Nassau and others · PIN M004.00 · 9 sheets indexed
- D96539Awarded Oct 16, 1980IMPROVING COMMUTER FACILITY PARKING OF RT. 231; A.C., CONC. CRIB RETAINING WALLSNY 231 · Suffolk · PIN 0930.45 · 12 sheets indexed
- D95605Awarded Oct 3, 1977VARIOUS HIGHWAYS IN THE TOWNS OF HUNTINGTON, BABYLON, SMITHTOWN, ISLIP, BROOKHAVEN & RIVERHEAD;GORE SAFETY IMPROVEMENTS ON RTS. 109, 110, 231, 25A, 27A, 25, 111, 495; SIGNS, GUIDE RAIL, MISC.NY 109, NY 110, NY 231, NY 25A, NY 27A, NY 111, I-495 · Huntington (town), Babylon (town), Smithtown (town), Islip (town), Brookhaven (town), Riverhead (town) · Suffolk · PIN 0801.12 · 41 sheets indexed
- LD 74-02Awarded May 5, 1974LANDSCAPING;NY 231, NY 27 · Islip (town), Babylon (village), Huntington (town) · Suffolk · PIN 0046.02 · 42 sheets indexed
- LD 73-04Awarded Mar 8, 1973LANDSCAPING;NY 231 · Islip (town), Babylon (village) · Suffolk · PIN 0046.02 · 10 sheets indexed
- RC 69-041Awarded May 12, 1969TRAFFIC SIGNALS, CURBS, PAVEMENT MARKINGS;NY 110, NY 231 · Amityville (village), Babylon (town), Huntington (town) · Nassau and others · PIN 0406.00 · 38 sheets indexed
- C.C.P. CONSTRUCTION,;DEER PARK AVE.; RT. 231NY 231, NY 27, NY 27A · Islip (town), Babylon (village), Huntington (town), Brightwaters (village) · Suffolk · 637 sheets indexed
- RC 65-012Awarded Mar 25, 1965A.C. RESURFACING;NY 231 · Babylon (town) · Suffolk · 10 sheets indexed
- TS 63-012Awarded Jan 7, 1964TRAFFIC SIGNS & SIGNALS,;DEER PARK AVE.;NY 231 · Babylon (town) · Suffolk · 24 sheets indexed
- SH 62--05Awarded May 31, 1962C.C.P. CONSTRUCTION,;DEER PARK AVE.; RT. 231NY 231 · Babylon (town) · Suffolk · 83 sheets indexed
- Bridge Parapet Replacement Project on Various Bridges over the Meadowbrook State Parkway and the Southern State Parkway in the Towns of Babylon, Hempstead and IslipI-31, NY 24, I-20, NY 135, I-28, I-32, NY 110, NY 231, I-42 · Babylon (town), Hempstead (town), Islip (town) · Nassau and others · PIN 0808.12 · 273 sheets indexed
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Source: NYSDOT Highway Record Plans, updated Jun 26, 2026. Our copy checked Nov 2, 2026. The index lags recent contracts. Download these as CSV