US Bridges

SR1511 over Prong of Back Creek

Good

Randolph County, North Carolina · 0.4 Mi. N. Jct. SR1712 · Structure no. 000000001510075

Built
2016
9 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
203 ft
3 main spans
Daily traffic
870
2017 count
Owner
State
State Highway Agency

About this bridge

SR1511 over Prong of Back Creek is a prestressed concrete slab carrying SR1511 over Prong of Back Creek in Randolph County, North Carolina. It was built in 2016, so it is 9 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 870 vehicles a day, roughly 6% of them trucks, projected to reach 1,740 by 2040. The structure is 203 ft (61.8 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR1511
CrossesProng of Back Creek
Location0.4 Mi. N. Jct. SR1712
RouteState Highway 1511
Coordinates35.7792, -79.84404
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length203 ft (61.8 m)
Longest span69 ft (21 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic870 (2017)
Projected traffic1,740 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1511 over Prong of Back Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is SR1511 over Prong of Back Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does SR1511 over Prong of Back Creek carry?

About 870 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is SR1511 over Prong of Back Creek?

The structure is 203 ft (61.8 m) long with a longest span of 69 ft (21 m) and a deck 30 ft wide.

Who owns SR1511 over Prong of Back Creek?

It is owned by the State Highway Agency.