US Bridges

SR1504 over Davidson River

Good

Transylvania County, North Carolina · 45 FT.W.JCT.SR1518 · Structure no. 000000001750193

Built
2013
12 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
7,400
2022 count
Owner
State
State Highway Agency

About this bridge

SR1504 over Davidson River is a prestressed concrete slab carrying SR1504 over Davidson River in Transylvania 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,400 vehicles a day, roughly 7% of them trucks, projected to reach 14,800 by 2040. The structure is 120 ft (36.5 m) long and 48 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR1504
CrossesDavidson River
Location45 FT.W.JCT.SR1518
RouteState Highway 1504
Coordinates35.25511, -82.6977
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating52.9 US tons
Inventory rating40.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length120 ft (36.5 m)
Longest span49 ft (14.9 m)
Deck width48 ft (14.6 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,400 (2022)
Projected traffic14,800 by 2040
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 SR1504 over Davidson River built?

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

What condition is SR1504 over Davidson River 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 September 2024.

How much traffic does SR1504 over Davidson River carry?

About 7,400 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1504 over Davidson River?

The structure is 120 ft (36.5 m) long with a longest span of 49 ft (14.9 m) and a deck 48 ft wide.

Who owns SR1504 over Davidson River?

It is owned by the State Highway Agency.