C04.Attachment 2-Standard 619-1 Drawings.pdf
PDF 951 KB Posted
- Attached to
- Flagstaff Ranger District- Cattle Guards Federal contract opportunity
- Solicitation number
- 1240LP26Q0093
- Issued by
- Department of Agriculture Forest Service
About this file
This is a Federal Lands Highway (FLH) Standard Specification for cattle guard construction, issued by the U.S. Department of Transportation Federal Highway Administration. The document provides detailed technical specifications and design standards for fabricating and installing cattle guards on federal lands.
The specification establishes construction requirements using AASHTO HL-93 loading standards and references materials conforming to AASHTO standards including ASTM specifications. Key materials include structural steel rails (ASCE 40 crane rail or acceptable alternates per ASTM A 500, Grade B, or ASTM A 618, Grade 2), treated timber per AASHTO M 168 with chromated copper arsenate treatment, aluminum alloy 6061-T6 or 6063-T6 tubing, and galvanized hardware per AASHTO M 111. The specification details two grid unit types (Type A at 6-foot and Type B at 8-foot grids) with multiple wing guard options including wood, angle iron, and aluminum tubing designs. Critical construction elements include W 8 x 18 beams at 10-inch centers, #4 reinforcing bars with 2-inch minimum concrete cover, continuous ¼-inch fillet shop welds, elastomeric bearing pads, treated timber posts and sills, drain pipe installation, and object markers mounted at minimum specified heights. The document provides comprehensive dimensional details, material specifications, and assembly instructions across multiple detail views to ensure consistent cattle guard construction on federal roadways. A metric version (M619-1) is also provided with equivalent specifications converted to millimeters.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| C04.Attachment 1-FRD Cattle Guard Specifications 2026.pdf | ||
| Amendment 001- Removal of Drawing Attachments.pdf | ||
| Questions and Answers.pdf | ||
| Questions and Answers.pdf | ||
| C04.1240LP26Q0093- FRD Cattle Guards.pdf | ||
| C04.Attachment 3-Buy American Certificate.pdf | ||
| C04.Attachment 1-FRD Cattle Guard Specifications 2026.pdf |
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Text version
NO SCALE
14.
13.
12.
11.
10.
9.
8.
7.
6.
5.
4.
3.
2.
1.
NOTE:
(4 required per cattle guard)
GUARD ANGLE DETAIL
TYPE I TYPE II
SECTION VIEW
DETAIL A DETAIL B
PLAN
DETAIL C DETAIL D
DETAIL E DETAIL F
ALUMINUM TUBING WING GUARD
END SUPPORT DETAIL
STANDARD GRID UNIT TYPES
ACCEPTABLE ALTERNATE RAIL
WOOD WING GUARD ANGLE IRON WING GUARD
ASCE 40 CRANE RAIL
timber (S4S) bid schedule
See Detail A
A3 tie Bars guard angle guard as shown in the
Nominal width of cattle
(See Details)
Standard grid unit types
Lateral support
Rails drain pipe treated timber (S4S) flat washer w/nut and hex bolt
Timber sill bars to angle iron guard angles
See Detail C flat washer w/nut and hex bolt flat washer w/nut and hex bolt
See Detail F aluminum tubing to provide for crown cut vertical leg only leg only. Field saw centers in vertical
Base plate
See Detail E
(typ.) welded to
Pay Limits, cattle guard corner. See Note 10
Object marker each
(See Detail)
End support
10d galvanized nails
See Detail D See Detail B
(equal spacing)
A2 tie Bars timber braces (S4S)
A4 BarsA1 Bars
A1 Bars wing guard only with wood
Timber sill-use
A5 Bars after fabrication weld. Galvanize each assembly angle with full penetration butt treated timber post (S4S)treated timber post (S4S) post (S4S) or approved alternate
(2 each/base plate) w/flat washer and nut sill (S4S)
Treated timber
Toenail with 16d galvanized nails pad to concrete (typ.)
elastomeric bearing pad cut weld
Saddle
I & II rail
ASCE 40 rail guard angles
Face of end support w/nut and flat washer steel rod threaded steel conforms to AASHTO ASTM A36 and is coated.
galvanize the alternate sections. All other structural steel does not contain a minimum of 0.2 percent copper, Grade B, Copper Steel or ASTM A 618, Grade 2. If the steel for alternate sections conforming to ASTM A 500, requirements for ASCE 40 crane rail. Provide structural
STRUCTURAL STEEL: Provide rails conforming to the finish.
shown. Give all concrete surfaces a Class 1 otherwise
LOADING: AASHTO HL-93.
traveled way.
marker to the elevation of the nearest edge of the
Mount object markers on posts with a minimum height roadway grade and template.
Construct the cattle guard to conform with the finished
Galvanize all hardware according to AASHTO M 111.
AASHTO M 133.
timber with chromated copper arsenate according to
Provide timber conforming to AASHTO M 168. Treat tubing.
Use aluminum alloy 6061-T6 or 6063-T6 for aluminum
555.
beams at each intersection. Weld according to Section
Install channels and wood blocking on cattle guards coat. Repair any damage to the coating installation.
563. Use SAE-AMS-STD-595, Gray, 36231 for the top requirements, shop apply coating according to Section
Unless otherwise shown in the special contract drain pipe with cattle guard unless otherwise shown.
Install drain pipe as shown where required. Include
Slope to drain
3"
2"
" max.4
4" min.
"8
"16
3"
"4
"4
10" x 5" x
" x 16" 4
3" radius hook -
"8
"8
18"
9"9"
72" treated
2" x 6" x
6" x 6" x 96"
" dia.2
Weld
30" treated
2" x 6" x 84"
6" x 6" x 96"
2" x 8" x 96"
" dia. x 7"2
" dia. x 6"8
" dia. x 7"8
"4
6" x 6" x 96" treated timber
12" for
"8
2" OD x
"8
L 3" x 3" x
(#4 Reinforcing Bars)
" dia. holes at 48"±16
8"
6" and 8" leg anchors. Weld to centers alternating 6" leg
" x 6" hex bolt8
"4
"8
L 3" x 3" x
"8
L 3" x 3" x
6" min.
"8
7" x 8" x
" x 8" stud2
"8
L 1" x 1" x
" anchors at 12"2
Space
"8
L 3" x 3" x
" x 74"4
L 2" x 2" x
9"12
W 8 x 18 beams
(10" centers)
" for type2
" x 87"4
L 2" x 2" x
9"
4"
12"
18"
24"
3"
12"
12"
12"
12"
12"
"8
"8
"8
"8
3" under W8 x 18. Bond4
48"
6"
20"20"20"
6"6"
21"21"21"21"
6"
"8
"4
71 "4
"8
8'-0" grid
Grid Type B
6'-0" grid
Grid Type A ty p ty p at 24" increments
12" thru 42"
"2
3"2
" unless 4
CONCRETE: Chamfer exposed edges
" fillet shop welds. Weld rail 4
All welds are continuous or alternate sections on both sides to the W 8 x 18 bar unless otherwise shown. All bars are #4.
Provide 2" minimum concrete cover to the face of any details.
See Standard 619-3 for optional precast foundation on Standard 619-2.
wider than 16 feet to maintain grate spacing as shown of 48 inches, measured from the bottom of the object
12"
31"
36"
6"
"21
"21
12" R
12" R
4" max.
3" min.
A5 Bars
CATTLE GUARD
619-1
FP-24
2/2026
FLH STANDARD
:3
A
M
M a r c h
S td c p w w o r k w f l\ d
\S td
.d g n
OFFICE OF FEDERAL LANDS HIGHWAY
U.S. DEPARTMENT OF TRANSPORTATION, FHWA
SPECIFICATION
APPROVED FOR USE
PROJECT
NUMBER
SHEET
NO SCALE
14.
13.
12.
11.
10.
9.
8.
7.
6.
5.
4.
3.
2.
1.
51 OD x 3.17 and 203 leg anchors. Weld to centers alternating 152 leg
Space M12 anchors at 305
NOTE:
(4 required per cattle guard)
GUARD ANGLE DETAIL
TYPE I TYPE II
SECTION VIEW
DETAIL A DETAIL B
PLAN
DETAIL C DETAIL D
DETAIL E DETAIL F
ALUMINUM TUBING WING GUARD
END SUPPORT DETAIL
STANDARD GRID UNIT TYPES
ACCEPTABLE ALTERNATE RAIL
WOOD WING GUARD ANGLE IRON WING GUARD
ASCE 40 CRANE RAIL
timber (S4S) bid schedule
See Detail A
A3 tie Bars guard angle guard as shown in the
Nominal width of cattle
(See Details)
Standard grid unit types
Lateral support
Rails drain pipe treated timber (S4S) flat washer w/nut and hex bolt
Timber sill bars to angle iron guard angles
See Detail C flat washer w/nut and hex bolt flat washer w/nut and hex bolt
See Detail F aluminum tubing to provide for crown cut vertical leg only leg only. Field saw centers in vertical
Base plate
See Detail E
(typ.) welded to
Pay Limits, cattle guard corner. See Note 10
Object marker each
(See Detail)
End support
10d galvanized nails
See Detail D See Detail B
(equal spacing)
A2 tie Bars timber braces (S4S)
A4 BarsA1 Bars
A1 Bars wing guard only with wood
Timber sill-use
A5 Bars after fabrication weld. Galvanize each assembly angle with full penetration butt treated timber post (S4S)treated timber post (S4S) post (S4S) or approved alternate
(2 each/base plate) w/flat washer and nut sill (S4S)
Treated timber
Toenail with 16d galvanized nails pad to concrete (typ.)
elastomeric bearing pad cut weld
Saddle
I & II rail
ASCE 40 rail guard angles
Face of end support w/nut and flat washer steel rod threaded steel conforms to AASHTO ASTM A36 and is coated.
galvanize the alternate sections. All other structural steel does not contain a minimum of 0.2 percent copper, Grade B, Copper Steel or ASTM A 618, Grade 2. If the steel for alternate sections conforming to ASTM A 500, requirements for ASCE 40 crane rail. Provide structural
STRUCTURAL STEEL: Provide rails conforming to the finish.
shown. Give all concrete surfaces a Class 1 otherwise
LOADING: AASHTO HL-93.
traveled way.
marker to the elevation of the nearest edge of the
Mount object markers on posts with a minimum height roadway grade and template.
Construct the cattle guard to conform with the finished
Galvanize all hardware according to AASHTO M 111.
AASHTO M 133.
timber with chromated copper arsenate according to
Provide timber conforming to AASHTO M 168. Treat tubing.
Use aluminum alloy 6061-T6 or 6063-T6 for aluminum
555.
beams at each intersection. Weld according to Section
Install channels and wood blocking on cattle guards coat. Repair any damage to the coating installation.
563. Use SAE-AMS-STD-595, Gray, 36231 for the top requirements, shop apply coating according to Section
Unless otherwise shown in the special contract drain pipe with cattle guard unless otherwise shown.
Install drain pipe as shown where required. Include
Slope to drain
152 x 152 x 2438
762 treated
51 x 152 x 2134
152 x 152 x 2438
M10 x 178
152 x 152 x 2438 treated timber
M10 x 152
51 x 203 x 2438
290 for type
305 for
M10 x 152 hex bolt
8 dia. holes at 1219±
(#13 Reinforcing Bars)
L 76 x 76 x 9.5
M12 x 203 stud
L 25 x 25 x 3.2
L 76 x 76 x 9.5
L 76 x 76 x 9.5
152 min.
M12 x 178
Weld 12 dia.
L 51 x 51 x 6.4 x 1850
W 200 x 27 beams
(254 centers)
L 51 x 51 x 6.4 x 2210
L 76 x 76 x 9.5
254 x 127 x 6.4
64.76
88.9 88.9
.9
76 radius hook - M20 x 406 at 0.6 m increments
3.6 m thru 12.6 m ty p
2.44 m grid
Grid Type B
1.83 m grid
Grid Type A
508508508 533533533533
152152152
1.81 m
2.42 m ty p
229229 under W200 x 27. Bond
178 x 203 x 9.5
R
R
1829 treated
51 x 152 x details.
See Standard M619-3 for optional precast foundation on Standard M619-2.
than 4.8 m to maintain grate spacing as shown wider rail or alternate sections on both sides to the W 200 x 27
All welds are continuous 6 mm fillet shop welds. Weld any bar unless otherwise shown. All bars are #13.
Provide 51 mm minimum concrete cover to the face of
Dimensions without units are millimeters.
units of measure. Metric This drawing contains
CONCRETE: Chamfer exposed edges 19 mm unless of 1220 mm, measured from the bottom of the object
47.6
108 max.
102 min.
102 max.
76 min.
A5 Bars
CATTLE GUARD
619-1M
FP-24
2/2026
FLH STANDARD
:4
A
M
M a r c h
S td M c p w w o r k w f l\ d \S td f p .d g n
OFFICE OF FEDERAL LANDS HIGHWAY
U.S. DEPARTMENT OF TRANSPORTATION, FHWA
SPECIFICATION
APPROVED FOR USE
PROJECT
NUMBER
SHEET
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