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Industries · Infrastructure

Built for 75-year service lives.

Bridge bolts, highway anchors, and Buy America-compliant hardware for public civil works.

DOT bridge decks, light-rail overpasses, tunnel segment liners, seismic retrofits. Infrastructure bolting has to survive 75 winters, meet Buy America provenance, and clear a federal inspection trail — and still show up when the contractor’s bar schedule says it should.

Bridges · Highways · Transit · Civil
Highway overpass and bridge infrastructure
Industry Overview

Buy America bolting with the paperwork to prove it.

Federal infrastructure money comes with 23 CFR 635.410 provenance — melted and manufactured in the US, mill-test reports on file, and a domestic-content certification on every shipment. That’s not optional, and it’s not easy to source.

We run a Buy America-qualified inventory: A325 Type 1 from US mills, F1554 anchor rods from US bar, and weathering-steel A709 hardware where the corrosion environment calls for it. Certifications ship with the bolts, not a week later by email.

Products engineered for infrastructure service.

05 · Core product lines
01
A325 Type 1 Domestic
Buy America-compliant structural bolting for DOT bridge connections.
02
F3125 Weathering
A325 Type 3 weathering-steel bolting for exposed bridge steel and Cor-Ten structures.
03
F1554 Anchor Assemblies
Domestic-melt anchor rods, headed or bent, with templates for bridge bearing plates.
04
Galvanized Rebar Couplers
HDG mechanical splices and dowels for cast-in-place bridge deck work.
05
Seismic Retrofit Hardware
Post-tensioned and epoxy-anchor hardware for bridge column jacketing and retrofits.
Shop by Product

Fastener lines most used in Infrastructure.

Structural Bolts
Structural Bolts
Anchor Bolts
Anchor Bolts
Industrial Fasteners
Industrial Fasteners
Custom Products
Custom Products

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Case Studies

Infrastructure fasteners in action.

Case 01

California bridge deck replacement.

Problem
A Caltrans bridge deck replacement needed 6,400 A325 Type 3 weathering-steel bolts with Buy America documentation on each heat lot.
Solution
We sourced from a domestic mill with melted-and-manufactured certification, organized the order into three sequenced lots by erection span, and shipped each lot with matched CMTRs.
Results
Every lot cleared Caltrans materials inspection on first submittal. The bridge deck closed out with zero fastener-related non-conformances.
Buy America paperwork that's actually complete on the first try — that's the difference. Everyone else plays email tag.
Resident Engineer, Caltrans
Case 02

Industrial water treatment, Idaho data center.

Problem
An industrial water-treatment system for a data-center build in Idaho needed anchor bolts and process bolting for skid foundations and piping connections, on a tight commissioning schedule.
Solution
We supplied F1554 anchor assemblies for the skid pads, A193 B7 flange bolting for the process piping, and HDG hardware throughout — freight-consolidated to the Idaho site to match the install crew.
Results
The water-treatment system commissioned on schedule. All bolting cleared inspection without callback.
California to Idaho on a tight schedule with the right bolts and the right paperwork. Not many distributors pull that off.
Project Engineer, industrial mechanical contractor
Specification Library
ASTM · SAE · ANSI · ISO
GRADEDESCRIPTIONPDF
A193 B7Alloy steel bolting, high-temp
A193 B8M316 stainless bolting
A325Structural bolts, heavy hex
F1554 55Anchor bolts, 55 ksi yield
F593Stainless cap screws
B18.2.1Square & hex bolts dim.
SAE J429Mech. properties — Grade 5/8
ISO 898-1Carbon/alloy metric properties
Resources

Visit our Specification Library.

A comprehensive resource for fastener specifications across the various industries we service. These guides offer access to a wide array of specifications, standards, and technical resources.

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Why California Fastener

Why California Fastener for infrastructure.

Public civil work has two masters: the engineer of record, and the federal compliance trail. We supply to both. US-melted steel on the shelf, CMTRs indexed by heat and lot, domestic-content certifications on letterhead, and a team that’s been reading DOT spec books since before Buy America was a political fight. The bolts are the easy part — the paperwork is the product.

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Let’s build it together.

Federal-aid project, state DOT bridge, or transit retrofit? Send us the spec section and bar schedule. We'll match the Buy America requirements, cut to length, and ship with compliance documentation that clears first-round inspection.

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