US Bridges

I-26 over Midland Park RD.-S-1187

Fair

Charleston County, South Carolina · 1 MI W N Charleston · Structure no. 000000000004270

Built
1964
61 years old, rebuilt 2012
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
183 ft
3 main spans
Daily traffic
84,650
2024 count
Owner
State
State Highway Agency

About this bridge

I-26 over Midland Park RD.-S-1187 is a steel stringer/multi-beam or girder carrying I-26 over Midland Park RD.-S-1187 in Charleston County, South Carolina. It was built in 1964 and reconstructed in 2012, so it is 61 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 84,650 vehicles a day, roughly 7% of them trucks, projected to reach 117,664 by 2044. The structure is 183 ft (55.7 m) long and 134 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-26
CrossesMidland Park RD.-S-1187
Location1 MI W N Charleston
RouteInterstate 26
CountyCharleston County
StateSouth Carolina
Coordinates32.92079, -80.03738
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length183 ft (55.7 m)
Longest span82 ft (25.1 m)
Deck width134 ft (40.7 m)
Roadway width126 ft (38.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic84,650 (2024)
Projected traffic117,664 by 2044
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-26 over Midland Park RD.-S-1187 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2012.

What condition is I-26 over Midland Park RD.-S-1187 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 I-26 over Midland Park RD.-S-1187 carry?

About 84,650 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is I-26 over Midland Park RD.-S-1187?

The structure is 183 ft (55.7 m) long with a longest span of 82 ft (25.1 m) and a deck 134 ft wide.

Who owns I-26 over Midland Park RD.-S-1187?

It is owned by the State Highway Agency.