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        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001685213</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001001385</issuerCik>
            <issuerName>NORTHWEST PIPE COMPANY</issuerName>
            <secFileNumber>000-27140</secFileNumber>
            <issuerAddress>
                <ns2:street1>201 NE Park Plaza Drive, Suite 100</ns2:street1>
                <ns2:city>Vancouver</ns2:city>
                <ns2:stateOrCountry>WA</ns2:stateOrCountry>
                <ns2:zipCode>98684</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>360-397-6250</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>AARON WILKINS</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>1000</noOfUnitsSold>
            <aggregateMarketValue>42670.00</aggregateMarketValue>
            <noOfUnitsOutstanding>9935295</noOfUnitsOutstanding>
            <approxSaleDate>03/24/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>01/18/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1000</amountOfSecuritiesAcquired>
            <paymentDate>01/18/2023</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>03/24/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>12/03/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Aaron Wikins</signature>
        </noticeSignature>
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144
0001685213
XXXXXXXX
LIVE
0001001385
NORTHWEST PIPE COMPANY
000-27140
201 NE Park Plaza Drive, Suite 100
Vancouver
WA
98684
360-397-6250
AARON WILKINS
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
1000
42670.00
9935295
03/24/2025
NASDAQ
Common
01/18/2023
Restricted Stock Units
Issuer
N
1000
01/18/2023
N/A
Y
03/24/2025
12/03/2024
/s/ Aaron Wikins