<SEC-DOCUMENT>0001437749-17-004831-index.html : 20170317
<SEC-HEADER>0001437749-17-004831.hdr.sgml : 20170317
<ACCEPTANCE-DATETIME>20170317162103
ACCESSION NUMBER:		0001437749-17-004831
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20170317
DATE AS OF CHANGE:		20170317

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NORTHWEST PIPE CO
		CENTRAL INDEX KEY:			0001001385
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL PIPE & TUBES [3317]
		IRS NUMBER:				930557988
		STATE OF INCORPORATION:			OR
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-216802
		FILM NUMBER:		17698293

	BUSINESS ADDRESS:	
		STREET 1:		5721 SE COLUMBIA WAY
		STREET 2:		SUITE 200
		CITY:			VANCOUVER
		STATE:			WA
		ZIP:			98661
		BUSINESS PHONE:		3603976250

	MAIL ADDRESS:	
		STREET 1:		5721 SE COLUMBIA WAY
		STREET 2:		SUITE 200
		CITY:			VANCOUVER
		STATE:			WA
		ZIP:			98661
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>nwpx20170316_s3.htm
<DESCRIPTION>FORM S-3
<TEXT>
Document 1 - file: nwpx20170316_s3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.5
<SEQUENCE>2
<FILENAME>ex4-5.htm
<DESCRIPTION>EXHIBIT 4.5
<TEXT>
Document 2 - file: ex4-5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 3 - file: ex5-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>4
<FILENAME>ex23-2.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
Document 4 - file: ex23-2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.3
<SEQUENCE>5
<FILENAME>ex23-3.htm
<DESCRIPTION>EXHIBIT 23.3
<TEXT>
Document 5 - file: ex23-3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>image.jpg
<TEXT>
Document 6 - file: image.jpg

</DOCUMENT>
</SEC-DOCUMENT>