US Bridges

US 301 over Savannah River

Poor

Allendale County, South Carolina · Ga/Sc State Line · Structure no. 000000000004443

Built
1965
60 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,550 ft
4 main spans
Daily traffic
1,300
2024 count
Owner
State
State Highway Agency

About this bridge

US 301 over Savannah River is a steel continuous stringer/multi-beam or girder carrying US 301 over Savannah River in Allendale County, South Carolina. It was built in 1965, so it is 60 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,300 vehicles a day, roughly 34% of them trucks, projected to reach 2,262 by 2044. The structure is 1,550 ft (472.4 m) long and 32 ft wide.

CarriesUS 301
CrossesSavannah River
LocationGa/Sc State Line
RouteU.S. Route 301
Coordinates32.93815, -81.50156
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating33.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+27 approach)
Design loadH 20
Structure length1,550 ft (472.4 m)
Longest span140 ft (42.7 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2024)
Projected traffic2,262 by 2044
Trucks34%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US 301 over Savannah River built?

It was built in 1965, making it 60 years old in 2025.

What condition is US 301 over Savannah River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does US 301 over Savannah River carry?

About 1,300 vehicles per day (2024 count), of which roughly 34% are trucks.

How long is US 301 over Savannah River?

The structure is 1,550 ft (472.4 m) long with a longest span of 140 ft (42.7 m) and a deck 32 ft wide.

Who owns US 301 over Savannah River?

It is owned by the State Highway Agency.