MN ERFO FS SPERI909 2022-1(1)_Plan S02_Revised.pdf
PDF 168 KB Posted
- Attached to
- Kimball Creek Culvert Replacement FR-304
- Solicitation number
- 12445526R0001
- Issued by
-
Department of Agriculture Forest Service
About this file
This is a Federal Highway Administration (FHA) standard design specification for temporary diversion channels used during road construction projects on federal lands. The document, designated Standard 157-SA, provides technical guidance for constructing temporary stream diversions to redirect water flow around active construction areas.
The specification presents two primary diversion channel designs: plastic-lined and riprap-lined configurations. Both designs require a minimum channel grade of 0.5 percent and must be constructed based on peak flow data specific to each project. The contractor is responsible for designing the temporary diversion and submitting the plan to the Forest Service for review and concept approval prior to construction. Key construction requirements include using either plastic liner or riprap along the entire channel length and width, burying the upstream edge of liners a minimum of 6 inches deep and securing with riprap or sandbags, avoiding longitudinal joints in plastic liners, installing geotextile filter conforming to specified standards, and using temporary culvert pipes to divert the stream channel during construction. The document includes a table of adjusted peak flows ranging from 140.25 cubic feet per second for a 2-year event to 1,267.50 cubic feet per second for a 500-year event, enabling contractors to design channels appropriate for anticipated water volumes. Temporary culvert backfill must be compacted using approved methods, and sandbags must be positioned to prevent backflow into the natural channel.
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Other files
| File | Type | Posted |
|---|---|---|
| RFI Response 20260128.docx | DOCX document | |
| Kimball.GEOreport 1.pdf | ||
| MN ERFO FS SPERI909 2022-1(1)_Plans_adv (revised01282026).pdf | ||
| Questions and Answers.docx | DOCX document | |
| MN ERFO FS SPERI909 2022-1(1) - REBAR ADV.pdf | ||
| SF 1442 Solicitation.pdf | ||
| FR304 SOW.pdf | ||
| DB.pdf | ||
| MN ERFO FS SPERI909 2022-1(1)_Plans_adv (1).pdf | ||
| FR304 SOI.pdf | ||
| Location Map.jpeg | JPEG file | |
| FR304 Supp Specs.pdf |
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Text version
Flow
Use sandbags to construct temporary barrier w
SECTION A-A
Plastic liner
Silt fence (typ.
when scheduled) w
B
Bury plastic liner 6" deep and secure with sandbags (typ.)
SECTION B-B
PROJECT
MN ERFO FS SPERI909 2022-1(1)
NOTES:
1. The temporary diversion details provided are proposed details. The contractor shall design the temporary diversion based on peak flow data provided in the table below. The temporary diversion plan shall be submitted to the Forest Service for review and concept approval.
2. Use plastic liner or riprap along the entire length and width of the temporary diversion channel.
3. Construct channel at a minimum grade of 0.5 percent.
4. Do not construct with longitudinal joints if using a plastic liner. Bury the upstream edge of the liner a minimum of 6" deep and secure with riprap or sandbags.
5. Use pipe to divert the stream channel during construction.
Refer to Section 157. Compact temporary culvert backfill using one of the methods listed in Subsection 204.11(a).
6. Provide geotextile filter conforming to Subsection 714.0l(a).
SHEET
NUMBER
PLASTIC LINED DIVERSION CHANNEL
See Note 5 X I 1x
I I
X I
I xi ..______ ----.___ I
'x l
Silt fence (typ. � \ when scheduled) ____/' '� �
Temporary diversion pipe
Permanent culvert
Roadway centerline
---- � Earthwork limits
Permanent natural channel
Riprap lining
Use sandbags to prevent backf/ow into natural channel
PLAN
DIVERSION CHANNEL
w
SECTION A-A
Silt fence (typ.
when scheduled)
Sandbags
Geotextile filter Riprap lining
SECTION 8-B
RIPRAP LINED DIVERSION CHANNEL
Subgrade Temporary culvert backfill
- -- - _j.
..... ��-;--;- way
: -:-:- ..... - ent
Roaitwa · I I -:-:- · · · · · : y //
T&Vll!W<J IR-mt-.W/mfl !:·S'<l! A WI AW !�II A\ '<Tl R017 /I. \'<I !X-:.'vln:0::<:
Natural ground
SECTION B-B
TEMPORARY CULVERT
NO SCALE
Geotextile filter
U.S. DEPARTMENT OF TRANSPORTATION
FEDERAL HIGHWAY ADMINISTRATION
OFFICE OF FEDERAL LANDS HIGHWAY
FLH STANDARD
TEMPORARY DIVERSION
CHANNELS
STANDARD
157-SA
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