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Department of Transportation - Division of Maintenance AGENCY INFORMATION Structure Maintenance & Investigations INSPECTION INFORMATION (1) STATE NAME CALIFORNIA 069 (2) HIGHWAY DISTRICT 10 (3) COUNTY CODE (29)SAN JOAQUIN (4) PLACE CODE (00000) (21) MAINTAIN 02 COUNTY HWY AGENCY (22) OWNER 02 COUNTY HWY AGENCY (98) BORDER BRIDGE STATE CODE N/A % SHARE N/A (99) BORDER BRIDGE STRUCTURE NUMBER N/A (90) INSPECTION DATE 02/25 (91) FREQUENCY 24 MO (92) CRITICAL FEATURE INSPECTION (93) CFI DATE A) NSTM INSP Y-YES 24 MO A) 04/23 B) UNDERWATER INSP Y-YES 60 MO B) 11/20 C) OTHER SPECIAL INSP N-NO MO C) N/A SNBI ITEMS USED TO CHECK INSPECTION FREQUENCY (B.C.09) CHANNEL CONDITION RATING 6 Satisfactory (B.C.15) UW CONDITION RATING (B.C.10) CHANNEL PROTECTION RATING 7 Good (B.AP.03) SCOUR VULNERABILITY RATING U Unknown Foundation (B.C.11) SCOUR CONDITION RATING 6 Satisfactory (B.LR.08) ROUTINE PERMIT LOADS B) Restricted routine permits (B.C.14) NSTM CONDITION RATING (B.IR.02) FATIGUE DETAILS No E/E' details CONSTRUCTION INFORMATION (27) YEAR BUILT 1959 (45) MAIN SPANS 1 (43a) STRUCTURE TYPE MAIN 3: STEEL (106) YEAR MODIFIED N/A (46) APPR SPANS 12 (43b) DESIGN TYPE MAIN 16: MOVABLE - BASCULE (34) SKEW 0 (48) MAX SPAN (M) 37.3 (44a) STRUCTURE TYPE APPR 2: CONCRETE CONT (49) LENGTH (M) 143.6 (35) STIR FLARE 0-NO (44b) DESIGN TYPE APPR 01: SLAB (112) NBIS BR LENGTH Y JOINTS 4 NO. OF HINGES 4 STRUCTURE DESCRIPTION South Approach: Continuous RC slab with hinges in Spans 2 and 6, Bents 4 and 8 with RC bent caps on PC/PS concrete column pile extensions (8), Bents 2, 3, 5, 6, 7, 9, 10, on PC/PS concrete column pile extensions (4), RC pile cap Abutment 1 with integral wingwalls on PC/PS concrete piles (3). Main Double Leaf Bascule: Double -leaf bascule with locking center span shear pins and locking heel counterweights, with built up welded steel outer girders (2), and trunnion girders (2 + 2), steel (30WF132) floor beams (3 + 3), built up floor beams (2 + 2) and built up end beams (1 + 1), steel (18WF50) stringers (3) with RC deck (75% lightweight), on trunnions inside hollow counterweight pits inside Piers 11 and 12 with four RC walls each. Piers 11 and 12 have bin type RC slabs supported on three of the RC walls and on single steel (30WF132) beams which span over the pits. Piers 11 and 12 are founded on RC spread footings on CISS piles. North Approach: Continuous RC slab, Bent 13 on PC/PS concrete pile extensions (4), RC pile cap Abutment 14 with integral wingwalls on PC/PS piles (3). SPAN CONFIGURATION South Approach: 1 @ 21.3 ft, 8 @ 28.0 ft with hinges in Spans 2 and 6, 1 @ 20.0 ft Main Double Leaf Bascule: hinge bearing, 1 @ 12.8 ft slab plus 2.0 ft overhang which overlap a 1 @ 20.2 ft trunnion leaf, trunnion bearing, 1 @ 122.5 ft double leaf bascule with midspan shear joint, trunnion bearing, 2.0 ft overhang plus 1 @ 12.8 ft slab which overlap a 1 @ 20.2 ft trunnion leaf, hinge bearing North Approach: 2 @ 20.0 ft Printed on: Monday 06/23/2025 03:38 PM Page 2 of 12 29C0022/AABI/153157