Stupp Bridge
Stupp Bridge fabricates structural steel plate girders for U.S. highway, design-build, and railroad bridge projects, serving 10+ state Departments of Transportation and Class I railroads from its 360,000 sq. ft. AISC-certified Bowling Green, Kentucky facility.
- Company typePrivate
- Founded1856
- HeadquartersBowling Green, United States
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Stupp Bridge does
Stupp Bridge Company, founded in 1856 as South St. Louis Iron Works and currently in its sixth generation of family ownership as a division of Stupp Bros., Inc., is a structural steel plate girder fabricator serving U.S. bridge infrastructure markets. Its operational core is a 360,000 sq. ft. fabrication facility in Bowling Green, Kentucky (opened 1999) with 50,000-ton annual capacity and 100+ ton lifting capability, producing girders 30 to 174 inches deep in curved or straight, parallel flange or variable depth configurations for highway, design-build, and railroad bridge applications. The company holds AISC Certified Bridge Fabrication with Advanced Major, Fracture Critical Endorsement, and Sophisticated Paint Endorsement, and is a National Steel Bridge Alliance member. Its differentiated technology stack includes CAD-based shop and field erection drawings, CNC burning/drilling equipment, an Engineering Document Management System (EDMS), and RFID bar code tracking that maintains complete material-to-finished-product genealogy.
Stupp Bridge generates revenue primarily through project-based, bid-build contracts and design-build engagements with state Departments of Transportation and Class I railroads, with pricing tied to tons of steel and project complexity. Named customers span 10+ state DOTs (Kentucky, Missouri, Ohio, Indiana, Tennessee, North Carolina, West Virginia, Georgia, Mississippi, Louisiana), railroad customers such as CSX Transportation, and general contractors including Walsh Construction. The 500-mile service radius from Bowling Green, supplemented by truck/rail/barge transportation, defines its geographic footprint, though it has begun extending beyond it via the March 2026 acquisition of McPeak Supply (Virginia). Go-to-market is direct enterprise field sales with three territory-based managers covering distinct U.S. regions.
The business is wholly private, with no public listing, no institutional investors, and no disclosed funding rounds; revenue is not publicly reported. Strategic posture is best characterized as a stable, capacity-anchored specialty industrial incumbent pursuing incremental geographic expansion and selective M&A, sustained by 150+ years of brand reputation, AISC certifications, and capital-intensive fabrication infrastructure that constitute defensible barriers to new entrants in U.S. plate girder bridge fabrication.
Stupp Bridge firmographics
Firmographics- Name
- Stupp Bridge
- Legal name
- Stupp Bridge Company, A Division of Stupp Bros., Inc.
- Website
- https://stuppbridge.com
- Company type
- Private
- Founded year
- 1856
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Stupp Bridge fabricates structural steel plate girders for U.S. highway, design-build, and railroad bridge projects, serving 10+ state Departments of Transportation and Class I railroads from its 360,000 sq. ft. AISC-certified Bowling Green, Kentucky facility.
- Ownership category
- akta.pro rank
Stupp Bridge industry classification
Industry- Product category
- Structural Steel Fabrication
- NAICS
- Agriculture, Construction, and Mining Machinery Manufacturing (3331)
- SIC
- Fabricated Plate Work (Boiler Shops) (3443), Construction, Mining & Materials Handling Machinery & Equip (3530)
- akta.pro primary industry
- Bridge & Infrastructure Steel Components (IMADACAL)
- akta.pro secondary industry
- Pulp, Paper & Wood Products Mill Construction (IMAFADAG)
Keywords
Where Stupp Bridge is headquartered
LocationHeadquarters
- HQ city
- Bowling Green
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Stupp Bridge business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales, Technology or R&D
Revenue model
- Bridge Steel Fabrication: Custom fabrication of structural steel plate girders for bridges, buildings, and crane applications. Projects are bid on individually with pricing based on tons of steel, complexity, and project specifications. Revenue is project-based and one-time per contract.
- Design-Build Services: Assists general contractors and designers with optimizing steel design and cost reduction for design-build projects. Includes value engineering services.
- Transportation Services: Delivery of fabricated components to job sites via truck, rail, and barge transportation.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Project-based custom fabrication pricing |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
Stupp Bridge product offering
Product offeringCore offering
Stupp Bridge fabricates custom structural steel plate girders for highway bridges, railroad bridges, crane girders, and building girders, producing girders 30 to 174 inches deep in curved or straight, parallel-flange or variable-depth configurations. The company supports these fabrications with in-house CAD shop/field drawings, an EDMS document control system, RF bar code tracking, a climate-controlled painting facility, and multi-modal delivery (truck, rail, barge) from its 360,000 sq. ft. Bowling Green, Kentucky plant. It also offers bid-build pricing, design-build, and value-engineering services to DOTs, general contractors, and private owners within a 500-mile service radius.
Product overview
Stupp Bridge Company operates as a structural steel plate girder fabrication company with a comprehensive service offering. The company provides a unified portfolio combining Engineering Services (CAD detailing, production control, document management, bar code tracking), Sales Services (bid build, budget pricing, design-build, value engineering), Fabrication Services (30" to 174" deep girders, curved/straight, continuous/simple bridges), and Transportation Services (truck, rail, barge delivery). Their flagship service is Structural Steel Plate Girder Fabrication for bridges, crane girders, and building girders, supported by their Bowling Green, Kentucky fabrication facility with 50,000 tons annual capacity. A notable portfolio showcase displays completed bridge projects demonstrating their scale capabilities.
Differentiator
Problem solved
Functional benefit
Products and services
- Structural Steel Plate Girder Fabrication
- Engineering Services
- Sales and Pre-Construction Services
- Transportation and Delivery Services
- Design-Build Bridge Services
Quantifiable outcome
- 50,000 tons annual fabrication capacity
- +4 more outcomes
Companies that use Stupp Bridge
Customer profileNamed customers13 records
Segments5 records
Ideal customer profiles3 records
Stupp Bridge technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Stupp Bridge partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- McPeak SupplycoreStupp Bridge Co. has reached a deal to acquire certain assets from McPeak Supply, a Virginia-based construction materials and bridge components business. This transaction represents an expansion of Stupp Bridge's operations through the purchase of assets. No financial terms or timeline for the acquisition were disclosed.
Scale indicators7 records
Recent moves6 records
Expansion highlights5 records
Stupp Bridge competitors and assessment
Company assessmentDirect peers
- Mountain States Steel / Wheeler Consolidated: Wheeler Consolidated operates Mountain States Steel and related bridge fabrication brands with AISC Advanced Major certification and fracture-critical endorsement. Competes with Stupp for large-tonnage state DOT and design-build bridge work in the Western and Central U.S.
- Veritas Steel: Veritas Steel (Brunswick, MO and Eau Claire, WI) is a dedicated bridge girder fabricator with AISC Advanced Major certification. Overlaps directly with Stupp on state DOT plate girder projects in the Midwest and Upper Midwest.
- High Steel Structures: High Steel Structures (Lancaster, PA) is one of the largest U.S. fabricators of structural steel plate girders for bridges and is AISC Advanced Major certified with fracture-critical endorsement. Direct competitor to Stupp for long-span highway and rail bridge projects in the Mid-Atlantic and Midwest.
- Hirschfeld Industries: Hirschfeld Industries (formerly Banker Steel) fabricates structural steel for bridges, industrial buildings, and complex architectural projects across multiple U.S. sites. Competes directly with Stupp for AISC Advanced Major bridge work and large-design-build highway contracts.
- Universal Steel America: Universal Steel America fabricates structural steel for bridges, buildings, and industrial structures, with AISC certifications. Overlaps with Stupp on DOT and design-build bridge projects.
- Stinger Bridge & Iron: Stinger Bridge & Iron is a regional fabricator specializing in steel bridge girders and structural steel for highway and rail projects. Comparable in scale and customer profile to Stupp at the regional-DOT level.
- W&W Steel / AFCO Industries: W&W/AFCO Steel is a structural and miscellaneous steel fabricator with bridge girder capability, serving DOTs and design-build contractors across multiple U.S. regions. Direct competitor for plate girder and complex bridge fabrication work.
Broad incumbents
- Nucor Corporation: Nucor is the largest U.S. steel producer and operates downstream fabrication businesses including Vulcraft/Verco. While primarily a steel mill, its components and joist businesses overlap thematically with Stupp's structural fabrication, and Nucor also supplies Stupp's raw steel plate.
- Gerdau Ameristeel: Gerdau operates steel mills and fabricated structural product businesses in North America, supplying rebar, structural shapes, and fabricated assemblies. Broad incumbent whose fabrication capabilities partially overlap with bridge steel fabrication.
Emerging players
- Contech Engineered Solutions: Contech Engineered Solutions supplies bridges, stormwater, and site development solutions primarily via precast/prestressed concrete and modular steel systems. Competes with Stupp at the bridge-deck material level (steel vs. concrete) rather than direct plate girder, but addresses the same DOT customers.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Stupp Bridge social profiles
Digital presenceStupp Bridge compliance and trust
Trust signalCompliance2 records
Stupp Bridge financial estimates
Financial estimateRevenue estimate
Valuation estimate
Stupp Bridge leadership team
Management profileNumber of profiles
Profiles3 records
Stupp Bridge funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Stupp Bridge M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Stupp Bridge
What does Stupp Bridge do?
Stupp Bridge fabricates custom structural steel plate girders for highway bridges, railroad bridges, crane girders, and building girders, producing girders 30 to 174 inches deep in curved or straight, parallel-flange or variable-depth configurations. The company supports these fabrications with in-house CAD shop/field drawings, an EDMS document control system, RF bar code tracking, a climate-controlled painting facility, and multi-modal delivery (truck, rail, barge) from its 360,000 sq. ft. Bowling Green, Kentucky plant. It also offers bid-build pricing, design-build, and value-engineering services to DOTs, general contractors, and private owners within a 500-mile service radius.
Is Stupp Bridge a public or private company?
Stupp Bridge is a private company. It is classified as family owned and is currently operating.
When was Stupp Bridge founded?
Stupp Bridge was founded in 1856. It employs 101 to 250 people.
Where is Stupp Bridge based?
Stupp Bridge is headquartered in Bowling Green, United States, in the North America region.
How does Stupp Bridge make money?
Three revenue lines are on record. Bridge Steel Fabrication is the primary driver. The others are design-Build Services and transportation Services.
Who are Stupp Bridge's main competitors?
Direct peers on record are Mountain States Steel / Wheeler Consolidated, Veritas Steel, High Steel Structures, Hirschfeld Industries, Universal Steel America, Stinger Bridge & Iron and W&W Steel / AFCO Industries. Broad incumbents are Nucor Corporation and Gerdau Ameristeel. Contech Engineered Solutions is listed as an emerging player.
Does Stupp Bridge have an API?
No public API is recorded for Stupp Bridge.
What industry is Stupp Bridge in?
Stupp Bridge's product category is Structural Steel Fabrication. Its primary akta.pro industry code is IMADACAL, Bridge & Infrastructure Steel Components, with a secondary code of IMAFADAG, Pulp, Paper & Wood Products Mill Construction. Its NAICS code is 3331 and its SIC code is 3443.