US Bridges

SR1635 over Smart Branch

Good

Macon County, North Carolina · 1.7 MI.S.JCT.SR1629 · Structure no. 000000001130310

Built
2017
8 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
570
2015 count
Owner
State
State Highway Agency

About this bridge

SR1635 over Smart Branch is a prestressed concrete slab carrying SR1635 over Smart Branch in Macon County, North Carolina. It was built in 2017, so it is 8 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 570 vehicles a day, roughly 6% of them trucks, projected to reach 1,140 by 2040. The structure is 40 ft (12.1 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR1635
CrossesSmart Branch
Location1.7 MI.S.JCT.SR1629
RouteState Highway 1635
CountyMacon County
StateNorth Carolina
Coordinates35.04041, -83.35718
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating54.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length40 ft (12.1 m)
Longest span38 ft (11.5 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic570 (2015)
Projected traffic1,140 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1635 over Smart Branch built?

It was built in 2017, making it 8 years old in 2025.

What condition is SR1635 over Smart Branch 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 July 2023.

How much traffic does SR1635 over Smart Branch carry?

About 570 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is SR1635 over Smart Branch?

The structure is 40 ft (12.1 m) long with a longest span of 38 ft (11.5 m) and a deck 27 ft wide.

Who owns SR1635 over Smart Branch?

It is owned by the State Highway Agency.