S-19-26_ADDENDUM_1_REPLACED_SHEETS.pdf
PDF 4 MB Posted
- Attached to
- Storey Boulevard Extension Construction
- Solicitation number
- S-19-26
- Issued by
- Niobrara County, Wyoming
About this file
This document is Addendum 1 to the design plans for the Storey Boulevard Extension Construction project (Bid S-19-26) for the City of Cheyenne, Wyoming Engineering Department. The addendum, dated March 20, 2026, provides revised sheets and clarifications to the original construction plans for the approximately 1.2-mile roadway extension between N. College Drive and Whitney Road. Key revisions include specification changes for asphalt material type (PG64-28), fence quantities (1,380 linear feet of new 4-wire fence and 235 linear feet of remove-and-reset fence), crushed base depth requirements (6 inches), and drainage infrastructure details. The addendum also specifies 450 linear feet of temporary fence installation at easement lines on the 6115 N. College Drive property during construction, clarifies that four Storey/Whitney intersection fillets have been added to the project scope, and includes detailed technical specifications for mailbox cluster pads, outlet structures, reinforcement standards, and standard construction details. The revised drawings reflect engineering coordination and design refinements to ensure compliance with City of Cheyenne specifications and construction standards.
The addendum identifies specific construction details and material requirements, including 8-inch concrete roadway paving sections, #5 rebar specifications with epoxy coating, galvanized steel components, and Class 4000 concrete for pond outlet structures. Temporary construction easements and drainage easements are designated across multiple properties along Summit Drive and College Drive, with defined disturbance limits and re-seeding requirements ranging from 45 to 8,452 square feet per location. The contractor is required to submit reinforcement shop drawings for engineer approval prior to construction and must coordinate utility protection, existing infrastructure maintenance, and proper disposal of materials throughout the project. No pricing modifications or set-aside information is contained in this addendum; contractors should reference the original bid documents for cost parameters and financial requirements. The sealed bid deadline remains March 31, 2026, with award proceeding to the lowest responsive and responsible bidder.
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307.637.6017
1103 OLD TOWN LANE, SUITE 101
CHEYENNE, WY 82009
AVI@AVIPC.COM
Dec 12, 2025
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ADDENDUM 1 REVISIONS
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TYPE AND GRADE SHALL BE PG64-28
CHEYENNE, WY 82009
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ADDENDUM 1 REVISIONS
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1380 LF OF NEW 4-WIRE FENCE
235 LF OF REMOVE AND RESET FENCE
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REMOVE AND RESET FENCE (POST AND RAIL)
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CRUSHED BASE TO BE 6" IN DEPTH
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PAID UNDER ONE BID ITEM
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1 - 1570-12 TYPE II (NEW)
1 - 1590 T2V (NEW)
4 REMOVE AND RESET
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THERE IS A TOTAL OF 4. STOREY/WHITNEY INTERSECTION FILLETS ADDED TO QUANTITY
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1"= (11x17)(11x17)(11x17)
1"=
40'
40'
6115 N. COLLEGE DRIVEN. COLLEGE DRIVE
SUMMIT DRIVE
307.637.6017
1103 OLD TOWN LANE, SUITE 101
CHEYENNE, WY 82009
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CE0 124
4019 SUMMIT DRIVE 4011 SUMMIT DRIVE 4019 SUMMIT DRIVE
DISTURBANCE LIMITS
(668 SF RE-SEEDING)65'
45' TEMPORARY
CONSTRUCTION EASEMENT
25' TEMPORARY
CONSTRUCTION
EASEMENT
SUMMIT DRIVE
4019 SUMMIT DRIVE
4011 SUMMIT
DRIVE
4217 SUMMIT DRIVE
SUMMIT DRIVE
DISTURBANCE LIMITS
(5,687 SF RE-SEEDING)
DISTURBANCE LIMITS
(1,044 SF RE-SEEDING)
116'
6115 N. COLLEGE DRIVE
4313 SUMMIT DRIVE
60' TEMPORARY
CONSTRUCTION EASEMENT
DISTURBANCE LIMITS
(79 SF RE-SEEDING)
251'
42' 46' 35'
DISTURBANCE LIMITS
(45 SF RE-SEEDING)
20' TEMPORARY
CONSTRUCTION EASEMENT
53'
DISTURBANCE LIMITS
(6,236 SF RE-SEEDING)
20' DRAINAGE
EASEMENT
DISTURBANCE LIMITS
(6,236 SF RE-SEEDING)
20' DRAINAGE
EASEMENT
DISTURBANCE LIMITS
(8,452 SF RE-SEEDING)
180'
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ADDENDUM 1 REVISIONS
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BEGIN TEMPORARY FENCE
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4.00'
20.00'
4.00'
3.42' /
CLUSTER
UNIT (TYP)
VARIES
TYPICAL MAILBOX CLUSTER PAD
PROFILE VIEW
N.T.S.
TYPICAL ROADWAY
PAVING SECTION
8" CONCRETE
307.637.6017
1103 OLD TOWN LANE, SUITE 101
CHEYENNE, WY 82009
AVI@AVIPC.COM
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4" CHAMFERED EDGE -
THREE SIDES2%
5" CRUSHED BASE GRADING 'W'
COMPACTED SUBGRADE
PROPOSED CBU SYSTEM
(BY OTHERS)
TYPICAL MAILBOX CLUSTER PAD
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PROPOSED CBU SYSTEM
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ASPHALT EDGE, SEE
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6" CRUSHED BASE GRADING 'W'
#5 REBAR
3/8" X 4" X 8-3/4"
GALVANIZED ASTM
A36 STEEL
6" X 3" X 1/2" Ø GALVANIZED
ANCHOR BOLTS w/HEX NUTS
AND WASHERS (2" THD.)
#5 REBAR
1-3/4"2-1/4" 2-1/4"1-3/4"
2" 2"
ANCHOR BOLT DETAIL
PLAN
BB
A
A
SECTION A-A
C
C
SECTION C-CSECTION B-B
NOT TO SCALENOT TO SCALE
NOT TO SCALE
N.T.S.
N.T.S.
OUTLET PIPE DIA. METER INV. ELEV.
45" X 29" ELLPTICAL 6077.50
TOP OF STRUCTURE ELEV.
6079.85
OUTLET STRUCTURE SUMMARY
NOTES:
1. TYPICAL CLEAR SPACE IS 3" MIN.
2. 90° OVERLAPS CAN BE SUBSTITUTED
FOR ONE PIECE BENDS. OVERLAPS
SHALL BE 12" MINIMUM
3. #5 REBAR GRATES TO BE WELDED @
EACH BAR INTERSECTION AND BOTH
GRATES TO BE EPOXY COATED.
4. CONCRETE FOR POND OUTLET
STRUCTURE SHALL MEET THE
REQUIREMENTS OF CITY OF
CHEYENNE SPECIFICATIONS CLASS
4000 CONCRETE.
5. REINFORCING STEEL SHALL BE
CENTERED IN THE 6" THICK WALLS
AND SLABS. REBAR SHALL BE EPOXY
COATED.
6. FIELD TRIM REBAR AS REQUIRED.
7. THE FLOOR SLAB OF THE OUTLET
STRUCTURE SHALL BE SLOPED A
MINIMUM OF 12" PER FOOT TOTAL.
8. THE GALVANIZED STEEL PLATE SHALL
BE ATTACHED TO THE OUTLET
STRUCTURE W/ STAINLESS STEEL
EXPANSION ANCHOR BOLTS AND
REMOVABLE STAINLESS STEEL NUTS.
9. REINFORCEMENT SHOP DRAWINGS
SHALL BE SUBMITTED BY THE
CONTRACTOR TO THE ENGINEER FOR
APPROVAL PRIOR TO CONSTRUCTION.
TOP OF OUTLET STRUCTURE = 6079.85'
29" X 45"
ELLIPTICAL
OUTLET PIPE
29" X 45"
ELLIPTICAL
OUTLET PIPE
OUTLET INV. ELEV.
6075.95
INV ELEV = 6077.50'
INV ELEV = 6075.95'
STAINLESS STEEL BOLTS
WITH TAMPER RESISTANT
REMOVABLE NUTS
4.
18" OPENING
22" PLATE
6.50'
4" GALVANIZED STEEL PLATE W/
(4) 3/4" DIAMETER CIRCULAR
ORIFICES & 14" DIAMETER
CIRCULAR ORIFICE
6"6"
6' - 6"
6"
SLOPE TO DRAIN
6"
2.50' 6.50'
3"6"
3.00'
6"
1.00'
TRASH GUARD #5 REBAR (MAX.
SPACING 4" C/C EACH WAY)
SEE ANCHOR BOLT
DETAIL
307.637.6017
1103 OLD TOWN LANE, SUITE 101
CHEYENNE, WY 82009
AVI@AVIPC.COM
Dec 12, 2025
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#4 REBAR
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