US Bridges

US 278 EB over Ramp 5012

Fair

Beaufort County, South Carolina · Hilton Head Island · Structure no. 000000000009128

Built
1997
28 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
240 ft
3 main spans
Daily traffic
15,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 278 EB over Ramp 5012 is a steel continuous stringer/multi-beam or girder carrying US 278 EB over Ramp 5012 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15,600 vehicles a day, roughly 3% of them trucks, projected to reach 18,720 by 2043. The structure is 240 ft (73.2 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 278 EB
CrossesRamp 5012
LocationHilton Head Island
RouteU.S. Route 278
CountyBeaufort County
StateSouth Carolina
Coordinates32.21438, -80.73862
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 rating62.5 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length240 ft (73.2 m)
Longest span110 ft (33.5 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 toll 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 Ramp 5012 built?

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

What condition is US 278 EB over Ramp 5012 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does US 278 EB over Ramp 5012 carry?

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

How long is US 278 EB over Ramp 5012?

The structure is 240 ft (73.2 m) long with a longest span of 110 ft (33.5 m) and a deck 41 ft wide.

Who owns US 278 EB over Ramp 5012?

It is owned by the State Highway Agency.