Great Loop bridge planning reference

Wilton J. Graves / US 278 Bridge

Wilton J. Graves / US 278 Bridge on Atlantic ICWnear Hilton Head / Bluffton, SC; closed clearance about 65 ft. Standard fixed ICW clearance.

Planning awareness only: Bridge information is provided for planning awareness only. Always verify current bridge status, clearance, water levels, bridge schedules, opening restrictions, Local Notices to Mariners, bridge signage, and official charts before transit. FloatPlanWizard is not a navigation authority.

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32.23940000, -80.77830000

Planning only Fixed bridgeAir draft concern
WaterwayAtlantic ICW
Route SegmentAtlantic ICW
Route VariantMain ICW
State / ProvinceSC
Nearest CityHilton Head / Bluffton
Mile MarkerMM 557.5
Bridge TypeFixed
Source Confidencemedium

Clearance And Opening Details

Vertical Clearance Closed65.00 ft
Vertical Clearance OpenNot verified
Horizontal ClearanceNot verified
VHF ChannelNot verified
PhoneNot verified
Last Verified2026-06-08
Verify against current water level / bridge gauge before transit.

Planning Notes

Air Draft Notes
Closed/air-draft clearance: 65 ft. Datum/reference: WG Atlantic ICW summary. Clearance band: Standard ICW 65 ft
Opening Schedule
Fixed.
Operator / Contact
Not verified
Navigation Notes
Fixed. Hilton Head approach. Closed/air-draft clearance: 65 ft. Datum/reference: WG Atlantic ICW summary. Clearance band: Standard ICW 65 ft Fixed.
Regulatory Notes
Fixed. Hilton Head approach.