03-_Colfax_Rail_Drawings.pdf
PDF 689 KB Posted
- Solicitation number
- IFB 226DR014
- Issued by
- Denver County, Colorado
About this file
Summary of Colfax Rail Drawings and Contract Opportunity
This is an engineering design document from the Regional Transportation District (RTD) in Denver, Colorado, detailing the trackwork specifications for the Colfax Curved Rail Replacement project. The project involves replacing a curved section of existing light rail track under the Colfax bridge near the Auraria West Station in downtown Denver. The drawings specify the alignment and dimensions for two tracks (Track A and Track B) with detailed specifications for pre-curved running rail, restraining rail, and associated fastening systems. The restraining rail schedule indicates Track A requires 398.91 feet of restraining rail running from Station 202+63.05 to 206+61.69, while Track B requires 391.18 feet from Station 202+98.36 to 206+89.54, for a combined total of 790.09 feet. The technical specifications include rail gauge dimensions (8 2" for tangent sections and 8 4/34" for spiral and curve sections), tie spacing at 30-inch intervals for standard ties and 27-inch intervals for restraining rail sections, and detailed fastener and separator block assembly requirements. Design drawings were completed on June 24, 2026, with final approval on June 26, 2026.
The procurement associated with these specifications is solicitation for materials only, requesting the supply of all pre-curved running rail and restraining rail required to complete the project. The materials specification references manufacturer shop drawings subject to owner approval and includes detailed notes regarding restraining rail installation, insulated joint staggering requirements of minimum 30 inches, running rail extension of 20 feet past restraining rail ends, and pre-curving requirements using standard shop practices. Specific fastening details include high-strength bolts, elastomer molded blocks, galvanized resilient rail clips, and glass reinforced nylon insulators as illustrated in the technical detail sheets.
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Other files
| File | Type | Posted |
|---|---|---|
| Colfax_Curved_Rail_Replacement_and_Spare,_Materials_only.pdf | ||
| 01-_Colfax_Rail_SOW_rev.pdf |
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Text version
HALF SIZE - Double The Scale
NUMBER:
REFERENCE
SHEET
DATEBYNO. REVISIONS
HORZ. SCALE:
VERT. SCALE:
DATE:
DATE:
CHECKED BY:
APPROVED BY:
DATE:
DATE:
DESIGNED BY:
DRAWN BY:
FILE NAME:
U S
E R c s
/6
/2
:4
:3
A
M K
E n g in e e ri n g
P ro je c ts
\C o rr id o rs
\L R
T C o rr id o rs \C e n tr a lC o rr id o r\ P ro je c ts
\C o lf a x
R a il
\C A
D D e s ig n \T ra c k
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ENGINEERING DIVISION
REGIONAL TRANSPORTATION DISTRICT
(303) 628-9000
DENVER, COLORADO 80202
1560 BROADWAY, SUITE 700
5+
206+00 207+00 208+00
POB 201+20.71
TS 202+73.77
SC 203+43.77
C S
.8
S T
.8
P O
E
.7
206+
207+00 208+00
POB 201+61.92
TS 203+06.33
SC 203+61.33
C S
.3
S T
.3
P O
E
.1
TBC3
TAC2
TRACK A
CENTERLINE
TRACK B
CENTERLINE
XXXX
LEGEND
INSULATED JOINT - DOUBLE RAIL
INSULATED JOINT - SINGLE RAIL
CURVE NUMBER
END RESTRAINING RAIL
STA 206+61.69
BEGIN RESTRAINING RAIL
STA 202+98.36
BEGIN RESTRAINING RAIL
STA 202+63.05
SHTOFSHT
1"=30' HORIZ
REGIONAL TRANSPORTATION DISTRICT
SEE LEFT M ARGIN
TA-001
TRACKW ORK
LRT ALIGNMENT PLAN
EJH
EJH
CLS
KVS
06/26/2026
06/24/2026
N/A
30 60 90
STA. 204+66.82
INSULATED JOINT
COLFAX RAIL REPLACEMENT
END RESTRAINING RAIL
STA 206+89.54
STA. 204+68.79
INSULATED JOINT
STA. 206+71.81
INSULATED JOINT
STA. 206+73.63
INSULATED JOINT
STA. 203+29.29
INSULATED JOINT
STA. 203+27.12
INSULATED JOINT
NOTES:
4. M ANUFACTURER SHOP DRAW INGS ARE SUBJECT TO APPROVAL BY THE OW NER.
THE RAIL. INSULATED JOINTS SHALL BE STAGGERED A MINIM UM OF 30 IN.
TO ACCOM ODATE THE INSULATED JOINTS SHOW N W ITHOUT FIELD CUTTING OF
3. THE PRECURVED AND RESTRAINING RAIL FOR CURVE TBC3 SHALL BE DESIGNED
RAIL.
2. THE RUNNING RAIL SHALL BE EXTEND 20 FT PAST THE END OF THE RESTRAINING
1. THE RESTRAINING RAIL SHALL EXTEND TO THE LOCATIONS SHOW N.
1 7/8"
3 15/16"
2" FLANGEWAY
HALF SIZE - Double The Scale
NUMBER:
REFERENCE
SHEET
DATEBYNO. REVISIONS
HORZ. SCALE:
VERT. SCALE:
DATE:
DATE:
CHECKED BY:
APPROVED BY:
DATE:
DATE:
DESIGNED BY:
DRAWN BY:
FILE NAME:
U S
E R c s
/6 /2
:4
:3
A
M K E n g in e e ri n g P ro je c ts \C o rr id o rs \L
R T C o rr id o rs \C e n tr a lC o rr id o r\ P ro je c ts \C o lf a x R a il \C
A D D e s ig n \T ra c k \C
O L F
X -T -D
T -R e s tr lD tl s .d g n
ENGINEERING DIVISION
REGIONAL TRANSPORTATION DISTRICT
(303) 628-9000
DENVER, COLORADO 80202
1560 BROADWAY, SUITE 700
DETAIL - RESTRAINING RAIL (TAPERED END)
NOT TO SCALE
NOT TO SCALE
PLAN - RESTRAINING RAIL LAYOUT
NOT TO SCALE
SECTION (TYP) - FASTENER AT SEPARATOR BLOCK
INSTALLATIONS (BEGINNING END SHOWN)
AND END OF ALL RESTRAINING RAIL
TAPERED END SHALL BE USED AT BEGINNING
3'- 0"
OF WEB
FULL WIDTH TO NEAR FACE
CUT HEAD OF RAIL FROM
OF CURVE
TS OR ST
RESTRAINING RAILTRANSITION TIES - 6@30"
" GAUGE8
54'-8
TANGENT
STANDARD TIES @ 30"
" GAUGE2
14'-8
SPIRAL AND CIRCULAR CURVE
10' 10'
HIGH STRENGTH (HEAD HARDENED) RAIL
115 RE RAIL FOR SPECIAL TRACKWORK
" GAUGE - TIES @ 27" MEASURED ON INSIDE RAIL4
34'-8
RESTRAINING RAIL
RAILS
RUNNING
END (TYP)
FLARED
(TYP.)
GLASS REINFORCED
NYLON INSULATOR
HEAVY HEX NUT
"D" BAR WASHER
RUNNING RAIL
2-1/8" STEEL SHIMS &
3-1/4" STEEL SHIMS
RESTRAINING RAIL
"D" BAR WASHER
FLAT WASHER
1" HIGH STRENGTH BOLT
SHOULDER (TYP)
RAIL SEAT PAD
ELASTOMER
MOLDED
BLOCKS
IRON SEPARATOR
4" LONG DUCTILE
GALVANIZED RESILIENT RAIL CLIP (TYP.)
RESTRAINING RAIL NOTES:
A
SHTOFSHT
B C
REGIONAL TRANSPORTATION DISTRICT
SEE LEFT MARGIN
TD-001
TRACKWORK
DETAILS
RESTRAINING RAIL
EJH
EJH
CLS
KVS
06/24/2026
06/24/2026 N/A
N/A
@ 4' MAX SPACING (TYP)
4" SEPARATOR BLOCK
TO BE INSTALLED AND REMOVED WITHOUT REMOVING THE BOLT.
5. SEPARATOR BLOCK ASSEMBLIES SHALL BE ADJUSTABLE WITH SHIMS DESIGNED
4. RESTRAINING RAIL SHALL BE SHOP DRILLED FOR SEPARATOR BLOCK ASSEMBLIES.
3. END RAIL FLARES SHALL HAVE 12" FLANGEWAY BLOCK ASSEMBLIES.
2. RESTRAINING RAILS SHALL BE JOINED WITH 12" FLANGEWAY BLOCK ASSEMBLIES.
TO BE PRE-CURVED USING STANDARD SHOP PRACTICES.
1. UNLESS OTHERWISE NOTED, RESTRAINING RAIL IN THE SPIRAL AND CURVE AREA
TRACK A
TRACK B
398.91
391.18
RAIL
LEFT
RAIL
RIGHTSTATION
END
STATION
BEGIN
LOCATION
398.91
391.18
790.09TOTAL RESTRAINING RAIL LENGTH
* RESTRAINING RAIL TO BE PLACED ADJACENT TO CURVE INNER RAIL
ADJACENT TO *
RESTRAINING RAIL SCHEDULE
RAIL (FEET)
RESTRAINING
LENGTH
COLFAX RAIL REPLACEMENT
COLFAX AVENUE RAIL
202+63.05 206+61.69
202+98.36 206+89.54
| COLFX-TA-PL001-Alignment |
| COLFX-T-DT001-RestrlDtls |
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