US Bridges

C-42-745 over Middle Tiger River

Poor

Spartanburg County, South Carolina · 2.5 MI NW of Duncan · Structure no. 000000000009590

Built
2001
24 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

C-42-745 over Middle Tiger River is a concrete continuous slab carrying C-42-745 over Middle Tiger River in Spartanburg County, South Carolina. It was built in 2001, so it is 24 years old, younger 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 250 vehicles a day, roughly 6% of them trucks, projected to reach 375 by 2043. The structure is 120 ft (36.6 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesC-42-745
CrossesMiddle Tiger River
Location2.5 MI NW of Duncan
RouteCounty Highway 745
Coordinates34.96295, -82.17289
Functional classUrban Collector

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.8 US tons
Inventory rating29.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic375 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$169,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-42-745 over Middle Tiger River built?

It was built in 2001, making it 24 years old in 2025.

What condition is C-42-745 over Middle Tiger River 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 November 2024.

How much traffic does C-42-745 over Middle Tiger River carry?

About 250 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is C-42-745 over Middle Tiger River?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 42 ft wide.

Who owns C-42-745 over Middle Tiger River?

It is owned by the County Highway Agency.