The State Belt ran four-coupled saddle tank engines in the early days, then preferred larger six-coupled tender engines from a variety of builders. World War II brought 6 ALCo S-2 diesels to the roster, the final locomotives built new for the Belt or its successors until 2018. The roster was gradually whittled down to just numbers 23 and 25 by the time of shutdown in 1993. LB Railco/San Francisco Bay Railroad supplemented these with a re-engined Baldwin for a time after revival and has recently added a new Knoxville SE10B to the roster.
No. 1 (1st), “Governor Markham”
2-4-2T
Baldwin c/n 12017, Jul 1891
| Driver diameter (in) | 50 |
| Cylinders (bore × stroke, in) | 17×24 |
| Weight (lb) | 96000 |
| Boiler pressure (psi) | 130 |
| Tractive effort (lbf) | 15330 |
Disposition
- Sold 1908 to E. B. & A. L. Stone, Lapis, CA
- Unknown final disposition, presumed scrapped
No. 1 (2nd)
0-6-0
Baldwin c/n 32607, Jan 1908
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 19×26 |
| Weight (lb) | 145000 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 27380 |
Disposition
- Sold 1946 to Pacific Portland Cement as #1, Gerlach, NV
- Scrapped 1951
No. 2
0-4-2T
Baldwin c/n 18618, Jan 1901
| Driver diameter (in) | 50 |
| Cylinders (bore × stroke, in) | 17×24 |
| Weight (lb) | 92700 |
| Boiler pressure (psi) | 160 |
| Tractive effort (lbf) | 18866 |
Disposition
- Sold 1911 to California Western Railroad as #2 (2nd), Fort Bragg, CA
- Scrapped 1920
No. 3
0-4-2T
Baldwin c/n 23897, Mar 1904
| Driver diameter (in) | 50 |
| Cylinders (bore × stroke, in) | 17×24 |
| Weight (lb) | 100000 |
| Boiler pressure (psi) | 160 |
| Tractive effort (lbf) | 18866 |
Disposition
- Sold 19?? to Judson Manufacturing as #3, Emeryville, CA
- Unknown final disposition, presumed scrapped
No. 4
0-6-0
Vulcan c/n 1759, Jul 1911
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 19×24 |
| Weight (lb) | 118000 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 25270 |
Disposition
- Sold 1932 to Modesto & Empire Traction as #5, Modesto, CA
- Sold 1938 to A.D. Schader, San Francisco, CA
- Sold or leased to Permanente Cement as #400, Permanente, CA
- Sold to U.S. Army as #6596, Lathrop, CA
- Sold to M. Davidson Scrap, Stockton, CA
- Donated to NRHS, Salt Lake City, UT
- Shipped 1971 to Wasatch Mountain Railway, Heber, UT
- Sold 1988 to Golden Gate Railroad Museum, San Francisco, CA
- Transferred 2006 to custody of San Francisco Trains, Brisbane, CA
- (Ownership formally transferred 2016)
- Under restoration in Brisbane, CA
No. 5
0-4-2T
Baldwin c/n 38036, Jul 1912
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 19×24 |
| Weight (lb) | 119000 |
| Boiler pressure (psi) | 145 |
| Tractive effort (lbf) | 21600 |
Disposition
- Sold 1928 to Columbia Steel as #4, Pittsburg, CA
- Unknown final disposition, presumed scrapped
No. 6
0-6-0
Baldwin c/n 39339, Feb 1913
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 19×26 |
| Weight (lb) | 145000 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 27380 |
Disposition
- Sold 1944 to Cowell Lime & Cement as Bay Point & Clayton #6, Clayton, CA
- Scrapped
No. 7
0-6-0
ALCo (Brooks) c/n 54563, Apr 1914
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 20×24 |
| Weight (lb) | 143000 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 28000 |
Disposition
- Sold 1944 to Yreka Western Railroad as #7, Yreka, CA
- Scrapped 1955
No. 8
0-6-0
baldwin c/n 43670, Jul 1916
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 20×24 |
| Weight (lb) | 145000 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 28000 |
Disposition
- Sold 1944 to Yreka Western Railroad as #8, Yreka, CA
- Scrapped 1956
No. 9
0-6-0
ALCo (Brooks) c/n 61021, May 1920
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 20×24 |
| Weight (lb) | 146000 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 28000 |
Disposition
- Leased to Union Oil Co., Oleum, CA
- Sold 1946 to Sinalona Sugar Co. as #9, Costa Rica, Sinaloa, Mexico
- Unknown final disposition, presumed scrapped
No. 10
0-6-0
baldwin c/n 57209, sep 1923
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 20×24 |
| Weight (lb) | 147900 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 28000 |
Disposition
- Sold 1946 to Pacific Portland Cement as #10, Gerlach, NV
- Scrapped 1951
No. 11
0-6-0
Baldwin c/n 60102, Jul 1927
| Driver diameter (in) | 51 |
| Cylinders (bore × stroke, in) | 20×24 |
| Weight (lb) | 150000 |
| Boiler pressure (psi) | 175 |
| Tractive effort (lbf) | 28000 |
Disposition
- Sold 1946 to FC Sinaloa as #11, Sinaloa, Mexico
- Unknown final disposition, presumed scrapped
[San Francisco Belt] No. 14, “Rock Crusher”*
B-B 70-ton Diesel
General Electric c/n 30172, Jun 1949
| Driver diameter (in) | 36 |
| Prime mover | Cooper-Bessemer FWL-6T |
| Weight (lb) | 139000 |
| Horsepower (hp) | 660 |
| Tractive effort (lbf) | 23600 |
*Unofficial nickname given to the locomotive by crews. Possibly a term of abuse; it was “intensely disliked” according to Bill Kaufmann.
Prior History
- Built as Southern Pacific Railroad #5109
- Sold to S.J. Simon & Son (dealer)
- Sold 1975 to Oregon Pacific & Eastern Railroad as #14, Cottage Grove, OR
Disposition
- Transferred 1978 to San Francisco Belt Railroad in exchange for #21
- Scrapped c.1986(?)
No. 20
B-B Diesel, model S-2
ALco c/n 70203, Jul 1943
| Driver diameter (in) | 40 |
| Prime mover | ALCo 539T |
| Weight (lb) | 230000 |
| Horsepower (hp) | 1000 |
| Tractive effort (lbf) | 57500 |
Disposition
- Sold 1960 to Alameda Belt Line Railroad as #D-4
- Scrapped 1975
No. 21
B-B Diesel, model S-2
ALco c/n 70204, Jul 1943
| Driver diameter (in) | 40 |
| Prime mover | ALCo 539T |
| Weight (lb) | 230000 |
| Horsepower (hp) | 1000 |
| Tractive effort (lbf) | 57500 |
Disposition
- Leased ~1952-1957 to Southern Pacific Railroad
- Transferred 1976 to Oregon Pacific & Eastern in exchange for #14, Cottage Grove, OR
- Sold 1995 to (Parr Terminal, Richmond, CA or Schnitzer Steel, Portland, OR)?
- Scrapped (?)
No. 22
B-B Diesel, model S-2
ALco c/n 70156, Feb 1944
| Driver diameter (in) | 40 |
| Prime mover | ALCo 539T |
| Weight (lb) | 230000 |
| Horsepower (hp) | 1000 |
| Tractive effort (lbf) | 57500 |
Disposition
- Sold 1960 to Alameda Belt Line as #D-5, Alameda, CA
- Renumbered #105
- Retired 1991 (remains on site?)
No. 23 / 49
B-B Diesel, model S-2
ALco c/n 70157, Mar 1944
| Driver diameter (in) | 40 |
| Prime mover | ALCo 539T |
| Weight (lb) | 230000 |
| Horsepower (hp) | 1000 |
| Tractive effort (lbf) | 57500 |
Disposition
- Renumbered to #49
- Retired 1993
- Returned to service c. 2008 by San Francisco Bay Railroad
- Renumbered to #23
- Converted to biodiesel
- In operation at Pier 96
No. 24
B-B Diesel, model S-2
ALco c/n 73602, Jul 1945
| Driver diameter (in) | 40 |
| Prime mover | ALCo 539T |
| Weight (lb) | 230000 |
| Horsepower (hp) | 1000 |
| Tractive effort (lbf) | 57500 |
Disposition
- Retired, retained as parts donor
- Scrapped c. 1986
No. 25
B-B Diesel, model S-2
ALco c/n 73603, Jul 1945
| Driver diameter (in) | 40 |
| Prime mover | ALCo 539T |
| Weight (lb) | 230000 |
| Horsepower (hp) | 1000 |
| Tractive effort (lbf) | 57500 |
Disposition
- Retired 1993
- Loaned to Golden Gate Railroad Museum, San Francisco, CA
- Returned to service c. 2008 by San Francisco Bay Railroad
- Retired 2019, prime mover removed
- On display at Pier 96
[San Francisco Bay Railroad] No. 27
B-B Diesel, model Vo1000(m)
Baldwin c/n 64433, Nov 1942
(Rebuilt: EMD)
| Driver diameter (in) | 40 |
| Prime mover | EMD 567C |
| Weight (lb) | ??? |
| Horsepower (hp) | ??? |
| Tractive effort (lbf) | ??? |
Prior History
- Built as St. Louis-San Francisco Railroad VO-1000 #206
- Re-engined with EMD 567 prime mover, 1957
- To U.S. Navy as #65-00095, 1984
- To Rail Journeys West, Redwood City, CA
- To Golden Gate Railroad Museum as #95, San Francisco, CA
Disposition
- Sold to Tri-City Railroad, Kennewick, WA (as #007?)
- Leased(?) to Mare Island Rail Services as #007, Vallejo, CA
- Leased(?) to Northwestern Pacific Railroad, Schellville, CA
[San Francisco Bay Railroad] No. 30
B-B Diesel, model SE10B
Knoxville Locomotive Works F/n* 5496-5, ??? 2018
| Driver diameter (in) | 40 |
| Prime mover | MTU Series 2000 |
| Weight (lb) | ??? |
| Horsepower (hp) | 1050 |
| Tractive effort (lbf) | 80000(?) |
*”Frame number.” Originally belonged to the EMD GP9 which served as a base; KLW considers the SE10B a “repower” and apparently does not assign construction numbers to them.
Disposition
- In operation at Pier 96