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HSChapter 73
U.S. imports of iron & steel bridges and bridge sections (HS 730810) totaled $1.3M in July 2026, traded with 14 countries.
Importers of Iron & Steel Bridges and Bridge Sections paid $652K in duties in July 2026 — an effective duty rate of 69% on $943K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataPrefabricated bridge structures and modular bridge sections of iron or steel serve infrastructure projects ranging from highway overpasses to pedestrian crossings and industrial access spans. Canada is the leading US supplier under this heading, reflecting integrated North American construction supply chains, with China and the United Arab Emirates also notable sources. As steel articles, these goods are subject to Section 232 tariffs, and large-scale infrastructure procurements may also trigger Buy America requirements that affect admissibility for federally funded projects. The heading resolves to a single 10-digit line (7308100000), so classification itself is straightforward, but origin and procurement-rule compliance are the primary trade concerns.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
21 shipments/mo
Federal-aid highway and transit projects in the US are subject to Buy America provisions that generally require steel and iron products to be produced domestically. Imported bridge sections may be ineligible for use in such projects unless a waiver is granted, so importers and project owners should confirm funding source and applicable procurement rules before ordering.
Bridge sections that are identifiable as parts of a bridge structure are classified under 7308100000, while generic structural members such as beams or girders not dedicated to a bridge application typically fall under heading 7308.90. The key classification criterion is whether the article is specifically designed and identifiable as a bridge component.
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ImportsExports
Imports
$1.3MYoY · Pro
Exports
$1.2MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7308100000 | Bridges and Bridge Sections of Iron or Steel | $1.3M | 49.77% | 71.92% | $652K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7308100000 | Bridges and Bridge Sections of Iron or Steel | $1.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
China and Canada together supply 83% of it.
customs district
destination
entry
rate provision · imports
28.1% enters free of duty; the effective duty rate is 49.77%.