US Bridges

S-17-429 over Little Pee Dee

Poor

Dillon County, South Carolina · 8MI N Dillon · Structure no. 000000000005030

Built
1967
58 years old, rebuilt 1996
Condition
Poor
inspected February 2025
Type
Slab
Concrete
Length
150 ft
10 main spans
Daily traffic
50
2023 count
Owner
State
State Highway Agency

About this bridge

S-17-429 over Little Pee Dee is a concrete slab carrying S-17-429 over Little Pee Dee in Dillon County, South Carolina. It was built in 1967 and reconstructed in 1996, so it is 58 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 50 vehicles a day, projected to reach 64 by 2043. The structure is 150 ft (45.7 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesS-17-429
CrossesLittle Pee Dee
Location8MI N Dillon
RouteState Highway 429
Coordinates34.54622, -79.39944
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans10
Design loadH 10
Structure length150 ft (45.7 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic64 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$656,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-17-429 over Little Pee Dee built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1996.

What condition is S-17-429 over Little Pee Dee in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does S-17-429 over Little Pee Dee carry?

About 50 vehicles per day (2023 count).

How long is S-17-429 over Little Pee Dee?

The structure is 150 ft (45.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-17-429 over Little Pee Dee?

It is owned by the State Highway Agency.