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HSChapter 73
U.S. imports of iron & steel bridges and bridge sections (HS 730810) totaled $1.3M in April 2026, traded with 11 countries.
Importers of Iron & Steel Bridges and Bridge Sections paid $826K in duties in April 2026 — an effective duty rate of 65% on $1.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Iron & Steel Bridges and Bridge Sections imports of $1.3M in April 2026 ran 34% above the year-to-date monthly average of $1.0M.
Last updated: April 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.
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.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| ANGOLA | -- | $10.6M | +$10.6M |
| CHINA | $997K | -- | -$997K |
| CANADA | $80K | $776K | +$696K |
| NETHERLANDS | -- | $770K | +$770K |
| THAILAND | -- | $198K | +$198K |
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7308100000 | BRIDGES AND BRIDGE SECTIONS OF IRON OR STEEL | $1.3M | 64.75% | $826K |
BRIDGES AND BRIDGE SECTIONS OF IRON OR STEEL
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7308100000 | BRIDGES AND BRIDGE SECTIONS OF IRON OR STEEL | $12.5M |
BRIDGES AND BRIDGE SECTIONS OF IRON OR STEEL
1.2M kg
ARTICLES OF IRON OR STEEL NESOI
HS 732690
STRUCTURES AND PARTS NESOI OF IRON OR STEEL
HS 730890
THREADED SCREWS AND BOLTS NESOI OF IRON OR STEEL
HS 731815
COOKING APPLIANCES ETC FOR GAS FUEL, IRON OR STEEL
HS 732111
NUTS OF IRON OR STEEL
HS 731816
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| State | Imports | Exports | Balance |
|---|---|---|---|
| New Jersey | $216K | $11.2M | +$11.0M |
| Texas | $338K | $809K | +$471K |
| Illinois | $354K | -- | -$354K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NORFOLK-NEWPORT NEWS, VA | -- | $10.6M | +$10.6M |
| HOUSTON, TX | $327K | $770K | +$443K |
| PORT HURON, MI | $9K | $490K | +$481K |