Durable 100-Year Expansion Device for Bridges, Type 3LII
3LII-150, 160, 200, 250, 300, 350, 400, 450, 500
A newly constructed bridge requires no replacement for 100 years! Long-term water resistance, maintenance-free.
In the longevity of bridges, the durability of expansion joints is a very important factor. Replacing expansion joints requires significant costs and traffic regulations, which can reduce the operational efficiency of bridges. The Hybrid Joint Type 3LII achieves a durability of 100 years, contributing to cost reduction and improved safety from a long-term perspective. 【Application Scenarios】 - New bridges - Repairs of existing bridges - Highways * For general roads, there is the "Hybrid Joint Type 3LIIA." 【Benefits of Implementation】 - Reduction in lifecycle costs due to no need for replacement for 100 years - Maintenance-free, eliminating the need for sound inspections and ultrasonic tests, reducing maintenance costs - Decreased frequency of traffic regulations, mitigating traffic congestion and noise damage, and enhancing safety - Adoption of new technology through NETIS registration (No. KT-210067-A)
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basic information
【Features】 1. Ultra-long durability of 100 years: Achieved 12 million cycles in fatigue loading tests by a third-party organization. 2. Long-term water-tightness of 50 years: Proven water-tightness equivalent to 50 years. Secondary water-tight materials are standard specifications. 3. Accommodates large expansion and wide gaps: One of the largest expansion capacities among NEXCO-approved products. 4. Ultra-low noise and vibration-free: Reduces noise with a vertical integrated structure. 5. Easy to install: Installation possible with lane restrictions on one side. 【Our Strengths】 Crittec Industries is a comprehensive manufacturer of bridge expansion devices, conducting everything from research, design, manufacturing, sales, to construction in-house. We provide products tailored to customer needs and contribute to the longevity of bridges.
Price range
Delivery Time
※Around 90 days (the delivery time may vary depending on the quantity, so please contact us for details).
Applications/Examples of results
NEXCO, the Ministry of Land, Infrastructure, Transport and Tourism, urban expressways, and various public organizations, including local governments, have adopted this product widely across the country. This product has passed the water stop test and durability test conducted by NEXCO.
Line up（9）
| Model number | overview |
|---|---|
| 3LII-150 | Expansion amount 150mm (±75mm) |
| 3LII-160 | Expansion amount 160mm (±80mm) |
| 3LII-200 | Expansion amount 200mm (±100mm) |
| 3LII-250 | Expansion amount 250mm (±125mm) |
| 3LII-300 | Expansion amount 300mm (±150mm) |
| 3LII-350 | Expansion amount 350mm (±175mm) |
| 3LII-400 | Expansion and contraction amount 400mm (±200mm) |
| 3LII-450 | Expansion amount 450mm (±225mm) |
| 3LII-500 | Expansion amount 500mm (±250mm) |
catalog（3）
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Company information
CRETEC, a company under Crittec Industries, was born from the combination of Create (creation) and Technology. As a comprehensive manufacturer of bridge expansion devices, we continue to develop expansion devices that contribute to the longevity of bridges and environmental protection. Moreover, we do not stop at product manufacturing; by consistently handling everything from research, design, manufacturing, sales, to construction in-house, we can manufacture and install expansion devices that meet the requests of our clients and general contractors, as well as the conditions and environments of the bridges and roads on-site. We also take into account the issues that arise during the installation of expansion devices and the damage conditions of existing devices that are removed, using this information to improve and develop our products. Please feel free to contact us for inquiries about bridge expansion devices, requests for materials, or estimates. ◆ What is a bridge expansion device? It is a component installed in the gap between the bridge abutment and the bridge girder, or between bridge girders. When designing a bridge, it is necessary to create a gap to prevent the bridge girders from colliding due to expansion and contraction caused by temperature changes. The bridge expansion device is required to cover this gap and ensure safe passage for vehicles and pedestrians.
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