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Inlets

Inlets capture surface water through grates or curb openings and directs it into the stormwater drainage system. By intercepting runoff from streets, parking lots, and landscaped areas, precast concrete inlets help control surface flows and reduce water accumulation. Built to meet AASHTO and ASTM specifications, precast concrete inlets deliver dependable performance and long service life. Inlets feature durable grates or curb-openings designs that efficiently capture runoff and are available in round, square, and rectangular configurations. Together with precast catch basins, manholes, and junction boxes, inlets provide contractors, engineers, and municipalities with reliable, installation-ready solutions that improve system efficiency, simplify construction, and support long-term infrastructure resilience.

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Inlets Deliver Dependable Stormwater Management Performance

Inlets are precast concrete structures that capture surface water through grates or curb openings and direct it into the stormwater drainage system, making them ideal for various infrastructure applications.

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Roadways

Roadway and street drainage systems depend on precast concrete inlets to efficiently capture surface runoff from travel lanes, shoulders, and roadway edges. Manufactured to meet AASHTO and ASTM requirements, inlets deliver dependable performance under heavy traffic loads and harsh environmental conditions. Available with grate and curb-opening configurations, precast concrete inlets integrate with catch basins, manholes, and junction boxes to improve system efficiency, streamline installation, and support long-term durability for public street and roadway infrastructure.

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Multifamily Stormwater Infrastructure

Multifamily developments use precast concrete inlets to manage stormwater runoff from parking areas, courtyards, and shared access drives. Built to meet ASTM and AASHTO standards, precast concrete inlets deliver consistent performance under daily traffic and varying site conditions. Available in multiple configurations, inlets efficiently capture surface water and integrate with catch basins and underground drainage systems, helping reduce surface ponding, protect pavement, and support durable, low-maintenance stormwater infrastructure throughout multifamily properties.

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Transportation Corridors and Facilities

Transportation infrastructure relies on precast concrete inlets to manage stormwater runoff along roadways, highways, bridges, and transit facilities. Designed to meet ASTM and AASHTO standards, inlets perform reliably under heavy traffic loads and harsh environmental exposure. Precast construction ensures consistent quality and efficient installation, minimizing disruptions. Integrated with catch basins and underground drainage systems, precast inlets help control surface water, reduce ponding, and support durable, low-maintenance stormwater management across transportation networks.

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Residential Developments

As residential developments continue to grow, developers rely on precast concrete inlets to manage stormwater runoff from parking areas, drive aisles, sidewalks, and shared outdoor spaces. Designed to meet ASTM and AASHTO standards, precast concrete inlets deliver dependable performance under daily traffic and variable site conditions. Available in multiple configurations, they efficiently capture surface water and integrate with catch basins and underground drainage systems, helping reduce ponding, protect paved surfaces, and support durable, low-maintenance stormwater management across residential communities.

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Parking Lots and Landscapes

Precast concrete inlets are utilized by commercial facilities to effectively manage surface runoff from parking lots, landscaping, buildings, and internal roadways. Produced according to AASHTO and ASTM criteria, inlets ensure reliable performance under substantial traffic loads and challenging weather conditions. Inlets with grate or curb-opening designs can be integrated with catch basins, manholes, and junction boxes to minimize surface ponding, protect pavement, and provide durable, long-term, low-maintenance stormwater infrastructure for commercial properties.

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Industrial Facilities and Loading Areas

Public utilities depend on precast concrete inlets to efficiently collect stormwater surface runoff from loading docks, parking areas, and internal roadways. Engineered in accordance with AASHTO and ASTM standards, inlets provide reliable performance under significant traffic volumes and demanding environmental conditions. Available in both grate and curb-opening configurations, inlets are compatible with catch basins, manholes, and junction boxes to enhance system efficiency, streamline installation, and support long-term durability for utility plants.

The Benefits of Inlets

Precast concrete inlets provide dependable stormwater management performance through key benefits.

Efficient Installation

Precast concrete inlets improve installation efficiency compared to cast-in-place alternatives and keep project schedules on time.

Consistent Quality

Precast concrete inlets are manufactured in a controlled environment to ensure quality performance.

AASHTO and ASTM-Certified

Manufactured to meet AASHTO and ASTM standards, precast concrete inlets support specification acceptance and deliver reliable performance.

A One-Stop Shop

County Materials manufactures a comprehensive range of precast wet utility structures, including inlets, catch basins, manholes, and junction boxes.

Proven Performance Across Diverse Markets

From municipal and commercial to multifamily and residential markets, County Materials’ Inlets provide a durable precast solution for stormwater management.

View Commercial Solutions
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Commercial

Precast concrete inlets are utilized by commercial facilities to effectively manage surface runoff from parking lots, landscaping, buildings, and internal roadways to help manage surface stormwater flows. Offering a full range of precast concrete components in addition to wet utility structures, County Materials offers an extensive range of products designed to help commercial developers maintain schedules, reduce jobsite complexity, and support commercial developments.

View Multifamily Solutions
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Multifamily

Multifamily developments use precast concrete inlets to manage stormwater runoff from parking areas, courtyards, and shared access drives, providing a dependable performance and long service life. County Materials manufactures a wide range of concrete underground infrastructure solutions that offer fast installation, consistent quality, and reliable performance.

View Municipal Solutions
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Municipal

For municipal developers, inlets efficiently capture surface runoff from travel lanes, shoulders, and roadway edges to ensure a reliable stormwater drainage system. Manufactured to meet AASHTO and ASTM requirements, County Materials offers a range of wet utility structures to support the municipal market with reliable, installation-ready solutions that improve system efficiency, simplify construction, and support long-term infrastructure resilience.

View Residential Solutions
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Residential

Residential developers require reliable precast concrete inlets to manage stormwater runoff from parking areas, drive aisles, sidewalks, and shared outdoor spaces. Designed to meet ASTM and AASHTO standards, County Materials produces an extensive selection of precast concrete components for the residential market that combine dependable performance with low-maintenance stormwater management.

View Utilities Solutions
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Utilities

Manufactured to meet the demanding infrastructure needs and keep critical facilities operating efficiently, concrete inlets efficiently collect stormwater surface runoff from loading docks, parking areas, and internal roadways. Explore our extensive selection of precast concrete solutions designed for the utilities market, offering regional production, coordinated delivery, and dependable performance.

View Transportation Solutions
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Transportation

For highways and roadway crossings, precast concrete inlets provide transportation construction with components that improve installation efficiency, ensure quality performance, and are AASHTO and ASTM-Certified County Materials manufactures regionally and offers a variety of complementary concrete products to support the transportation market, focused on helping contractors maintain project schedules and reduce jobsite complexity, while delivering dependable performance for transportation projects.

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