US Bridges

L-1526 over Tidal Marsh

Good

Beaufort County, South Carolina · 4 MI SE of Bluffton · Structure no. 000000000010062

Built
2016
9 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,191 ft
13 main spans
Daily traffic
19,100
2023 count
Owner
County
County Highway Agency

About this bridge

L-1526 over Tidal Marsh is a prestressed concrete continuous stringer/multi-beam or girder carrying L-1526 over Tidal Marsh in Beaufort County, South Carolina. It was built in 2016, so it is 9 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 19,100 vehicles a day, roughly 2% of them trucks, projected to reach 21,392 by 2043. The structure is 1,191 ft (363 m) long and 51 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesL-1526
CrossesTidal Marsh
Location4 MI SE of Bluffton
RouteCounty Highway 1526
Coordinates32.23278, -80.80563
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating23.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans13
Design loadHL 93
Structure length1,191 ft (363 m)
Longest span95 ft (29 m)
Deck width51 ft (15.6 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,100 (2023)
Projected traffic21,392 by 2043
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was L-1526 over Tidal Marsh built?

It was built in 2016, making it 9 years old in 2025.

What condition is L-1526 over Tidal Marsh 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 2023.

How much traffic does L-1526 over Tidal Marsh carry?

About 19,100 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is L-1526 over Tidal Marsh?

The structure is 1,191 ft (363 m) long with a longest span of 95 ft (29 m) and a deck 51 ft wide.

Who owns L-1526 over Tidal Marsh?

It is owned by the County Highway Agency.