Concepcion Bridge Repair

The San Antonio River Authority is requesting bids on repair and restoration of Concepcion Bridge, a pedestrian bridge on Mission Reach near Probandt Street in San Antonio, with proposals due September 18, 2026. The project addresses thermal-expansion damage to concrete abutments identified during a 2025 inspection program; repair design was completed by Pape Dawson and focuses on strengthening and repairing the damaged abutments.

The scope encompasses seeding for erosion control, excavation and backfill for structures, reinforcement steel installation, structural concrete placement, concrete finishing and curing, structural grout, and metal fabrications. Detailed technical specifications address materials, equipment, quality control testing, and execution procedures. Contractors must submit work plans covering excavation safety systems, ground and surface water control, and backfill material sourcing prior to construction. Backfill materials must meet Unified Soil Classification System standards and testing for plasticity and gradation; foundation excavation and backfill must achieve 95 percent of maximum standard dry density, while backfill around structures below unpaved areas must reach 90 percent compaction. The Owner's independent testing laboratory will perform verification testing at specified frequencies, with in-place density tests required at minimum for every 100 cubic yards of compacted backfill and at least three tests per work shift. Seeding specifications require establishment of a permanent grass stand covering 80 percent of planting areas using native grass mixes, wildflower mixes, and seasonal cover crops, with contractor responsibility for maintenance including irrigation, weed control, and repair of disturbed areas until Owner acceptance.

The technical specifications document (00363-3 Concepcion Bridge-Specs Ex 3.pdf) was prepared by Texas Engineering Firm #470 and Texas Surveying Firm #10028800, with professional engineer Marcos A. Wortley, Texas License #128045.