Precast Segment
Delivery & Installation
Yard-to-site logistics, match-cast sequencing, and high-throughput segment erection for segmental bridge and elevated motorway construction -- proven at 15 segments per day.
Precast segment delivery involves transporting match-cast concrete segments from the casting yard to the bridge erection site and installing them in the correct sequence using launching gantries or cranes. JCY managed segment logistics for 2,203 segments on the USW Elevated Motorway, coordinating yard scheduling, transport routes, epoxy joint application, and erection sequences at a sustained rate of 15 segments per day.
What Precast Segment Delivery Involves
Segmental bridge construction relies on a tightly coordinated supply chain that begins at the casting yard and ends with a stressed, epoxy-bonded segment in its final position on the superstructure. Each segment is match-cast against its neighbour to ensure geometric accuracy -- the casting sequence directly determines the erection sequence, and any disruption to that chain can halt the entire operation.
Segment logistics planning covers yard storage layout, transport vehicle allocation, route planning (including height and weight restrictions), and site receiving schedules. On the erection side, segments are lifted into position by launching gantry or crane, epoxy is applied to the joint face within strict open-time windows, and temporary post-tensioning bars draw the segments together before permanent stressing tendons are threaded and stressed.
Throughput rates are governed by the erection cycle time -- the interval between one segment reaching its final position and the next being ready for lift. At 15 segments per day, each cycle runs to approximately 45 minutes, leaving minimal margin for equipment downtime, surveying delays, or epoxy application overruns.
Segment Match-Casting
Coordination of casting sequences to maintain geometric continuity between adjacent segments, including survey control, casting cell scheduling, and quality assurance of joint face geometry.
Epoxy Joint Application
Application of structural epoxy adhesive to segment joint faces within manufacturer-specified open times, including surface preparation, mixing procedures, and coverage verification.
Erection Sequences
Span-by-span and balanced cantilever erection sequencing, including gantry advance procedures, temporary stressing bar installation, and permanent tendon threading coordination.
Segment Delivery Experience
2,203
Segments Delivered
15/day
Peak Erection Rate
15 km
Elevated Motorway
45 min
Average Cycle Time
On the USW Elevated Motorway in Morocco, JCY managed the full precast segment delivery chain for 2,203 segments across 15 km of elevated roadway. This involved coordinating three casting yards, scheduling transport convoys operating on public roads, managing segment storage and retrieval at the erection site, and maintaining a sustained erection rate of 15 segments per day using launching gantries.
The project required real-time coordination between yard production schedules, transport fleet availability, and gantry erection cycles. Segment identification, orientation marking, and match-cast pairing were tracked through a segment management system that ensured every segment reached the correct span in the correct sequence.
Related Projects
USW Elevated Motorway
2,203 precast segments delivered and erected across 15 km of elevated motorway in Morocco, using span-by-span launching gantry erection at 15 segments per day.
View ProjectInternational Bridges
Segmental and stay cable bridge construction across Morocco and France, including the Bouregreg Valley crossing and approaches to the Mohammed VI Tower.
View ProjectRelated Services
Post-Tensioning
Strand stressing coordination and grouting supervision for segmental bridge post-tensioning systems.
Bridge Engineering
Design management and construction methodology for segmental bridge delivery.
Tender & Method Engineering
Construction methodology development for segmental bridge tender submissions.
From the Field
Photography from real projects demonstrating this capability.
Planning a segmental bridge project?
From casting yard coordination to gantry erection at 15 segments per day, JCY brings proven segment delivery methodology to your project.