US Bridges

SR1520 over Drowning Creek

Good

Montgomery County, North Carolina · 1.5 Mi. E. Jct. I73/74 · Structure no. 000000001230099

Built
2013
12 years old
Condition
Good
inspected March 2021
Type
Slab
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
700
2016 count
Owner
State
State Highway Agency

About this bridge

SR1520 over Drowning Creek is a prestressed concrete slab carrying SR1520 over Drowning Creek in Montgomery County, North Carolina. It was built in 2013, so it is 12 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 700 vehicles a day, roughly 6% of them trucks, projected to reach 1,400 by 2040. The structure is 72 ft (21.9 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesSR1520
CrossesDrowning Creek
Location1.5 Mi. E. Jct. I73/74
RouteState Highway 1520
Coordinates35.26333, -79.70497
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 inspectionMarch 2021
Inspection intervalevery 48 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 adequacy7: Better than present minimum 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 spans1
Design loadHL 93
Structure length72 ft (21.9 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 traffic700 (2016)
Projected traffic1,400 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 SR1520 over Drowning Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is SR1520 over Drowning 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 March 2021.

How much traffic does SR1520 over Drowning Creek carry?

About 700 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is SR1520 over Drowning Creek?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 30 ft wide.

Who owns SR1520 over Drowning Creek?

It is owned by the State Highway Agency.