US Bridges

US 21 over Albergotti Creek

Good

Beaufort County, South Carolina · Near Beaufort · Structure no. 000000000000009

Built
2014
11 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
31,400
2023 count
Owner
State
State Highway Agency

About this bridge

US 21 over Albergotti Creek is a concrete continuous slab carrying US 21 over Albergotti Creek in Beaufort County, South Carolina. It was built in 2014, so it is 11 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 31,400 vehicles a day, roughly 4% of them trucks, projected to reach 37,680 by 2043. The structure is 120 ft (36.6 m) long and 83 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 21
CrossesAlbergotti Creek
LocationNear Beaufort
RouteU.S. Route 21
Coordinates32.45015, -80.73155
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating51.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width83 ft (25.3 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,400 (2023)
Projected traffic37,680 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 21 over Albergotti Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is US 21 over Albergotti Creek 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 August 2024.

How much traffic does US 21 over Albergotti Creek carry?

About 31,400 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 21 over Albergotti Creek?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 83 ft wide.

Who owns US 21 over Albergotti Creek?

It is owned by the State Highway Agency.