US Bridges

US 278 EB over US 278 Bus EB

Good

Beaufort County, South Carolina · Hilton Head Island · Structure no. 000000000009127

Built
1997
28 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
134 ft
1 main span
Daily traffic
15,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 278 EB over US 278 Bus EB is a steel stringer/multi-beam or girder carrying US 278 EB over US 278 Bus EB in Beaufort County, South Carolina. It was built in 1997, so it is 28 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,600 vehicles a day, roughly 3% of them trucks, projected to reach 18,720 by 2043. The structure is 134 ft (40.8 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 278 EB
CrossesUS 278 Bus EB
LocationHilton Head Island
RouteU.S. Route 278
Coordinates32.21547, -80.74011
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length134 ft (40.8 m)
Longest span134 ft (40.8 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,600 (2023)
Projected traffic18,720 by 2043
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 278 EB over US 278 Bus EB built?

It was built in 1997, making it 28 years old in 2025.

What condition is US 278 EB over US 278 Bus EB in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does US 278 EB over US 278 Bus EB carry?

About 15,600 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is US 278 EB over US 278 Bus EB?

The structure is 134 ft (40.8 m) long with a longest span of 134 ft (40.8 m) and a deck 41 ft wide.

Who owns US 278 EB over US 278 Bus EB?

It is owned by the State Highway Agency.