US Bridges

SR1448 over Allison Creek

Good

Macon County, North Carolina · 0.4 MI.S.JCT.SR1128 · Structure no. 000000001130343

Built
2022
3 years old
Condition
Good
inspected November 2024
Type
Slab
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
1,100
2021 count
Owner
State
State Highway Agency

About this bridge

SR1448 over Allison Creek is a prestressed concrete slab carrying SR1448 over Allison Creek in Macon County, North Carolina. It was built in 2022, so it is 3 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 1,100 vehicles a day, roughly 7% of them trucks, projected to reach 2,200 by 2040. The structure is 63 ft (19.2 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR1448
CrossesAllison Creek
Location0.4 MI.S.JCT.SR1128
RouteState Highway 1448
Coordinates35.11708, -83.47328
Functional classRural Major 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84 US tons
Inventory rating64.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length63 ft (19.2 m)
Longest span59 ft (17.9 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2021)
Projected traffic2,200 by 2040
Trucks7%
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 SR1448 over Allison Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is SR1448 over Allison 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 November 2024.

How much traffic does SR1448 over Allison Creek carry?

About 1,100 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1448 over Allison Creek?

The structure is 63 ft (19.2 m) long with a longest span of 59 ft (17.9 m) and a deck 33 ft wide.

Who owns SR1448 over Allison Creek?

It is owned by the State Highway Agency.