US Bridges

I-26 over Timothy Creek

Fair

Berkeley County, South Carolina · 13 MI NW of Summerville · Structure no. 000000000003187

Built
1960
65 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
52,800
2023 count
Owner
State
State Highway Agency

About this bridge

I-26 over Timothy Creek is a concrete culvert carrying I-26 over Timothy Creek in Berkeley County, South Carolina. It was built in 1960, so it is 65 years old, older 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 52,800 vehicles a day, roughly 21% of them trucks, projected to reach 81,312 by 2043. The structure is 21 ft (6.3 m) long and 187 ft wide.

CarriesI-26
CrossesTimothy Creek
Location13 MI NW of Summerville
RouteInterstate 26
Coordinates33.13112, -80.29822
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width187 ft (57 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,800 (2023)
Projected traffic81,312 by 2043
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 I-26 over Timothy Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is I-26 over Timothy Creek 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 September 2023.

How much traffic does I-26 over Timothy Creek carry?

About 52,800 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is I-26 over Timothy Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 187 ft wide.

Who owns I-26 over Timothy Creek?

It is owned by the State Highway Agency.