US Bridges

S-40-1437 over I-77

Fair

Richland County, South Carolina · 11 MI N of Columbia · Structure no. 000000000006925

Built
1976
49 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
309 ft
4 main spans
Daily traffic
1,900
2023 count
Owner
State
State Highway Agency

About this bridge

S-40-1437 over I-77 is a steel stringer/multi-beam or girder carrying S-40-1437 over I-77 in Richland County, South Carolina. It was built in 1976, so it is 49 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 5 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 1,900 vehicles a day, roughly 5% of them trucks, projected to reach 2,432 by 2043. The structure is 309 ft (94.2 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS-40-1437
CrossesI-77
Location11 MI N of Columbia
RouteState Highway 1437
CountyRichland County
StateSouth Carolina
Coordinates34.14713, -80.96507
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length309 ft (94.2 m)
Longest span117 ft (35.7 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic2,432 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-40-1437 over I-77 built?

It was built in 1976, making it 49 years old in 2025.

What condition is S-40-1437 over I-77 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 January 2023.

How much traffic does S-40-1437 over I-77 carry?

About 1,900 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-40-1437 over I-77?

The structure is 309 ft (94.2 m) long with a longest span of 117 ft (35.7 m) and a deck 38 ft wide.

Who owns S-40-1437 over I-77?

It is owned by the State Highway Agency.