US Bridges

SR1315 over Underwood Creek

Poor

Union County, North Carolina · 0.1 Mi. W. Jct. SR1332 · Structure no. 000000001790206

Built
1968
57 years old
Condition
Poor
inspected November 2024
Type
Channel Beam
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
4,600
2022 count
Owner
State
State Highway Agency

About this bridge

SR1315 over Underwood Creek is a prestressed concrete channel beam carrying SR1315 over Underwood Creek in Union County, North Carolina. It was built in 1968, so it is 57 years old, older than the North Carolina average of 38.7 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 4,600 vehicles a day, roughly 7% of them trucks, projected to reach 9,200 by 2040. The structure is 26 ft (7.9 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR1315
CrossesUnderwood Creek
Location0.1 Mi. W. Jct. SR1332
RouteState Highway 1315
Coordinates34.96932, -80.64649
Functional classRural Major 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 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating26.9 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2022)
Projected traffic9,200 by 2040
Trucks7%
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

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1315 over Underwood Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is SR1315 over Underwood Creek 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 SR1315 over Underwood Creek carry?

About 4,600 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1315 over Underwood Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 31 ft wide.

Who owns SR1315 over Underwood Creek?

It is owned by the State Highway Agency.