US Bridges

NC133 over Mallory Creek

Poor

Brunswick County, North Carolina · 4 MI S. Jct. US17 · Structure no. 000000000190067

Built
1991
34 years old
Condition
Poor
inspected May 2023
Type
Slab
Prestressed Concrete
Length
82 ft
2 main spans
Daily traffic
5,100
2021 count
Owner
State
State Highway Agency

About this bridge

NC133 over Mallory Creek is a prestressed concrete slab carrying NC133 over Mallory Creek in Brunswick County, North Carolina. It was built in 1991, so it is 34 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,100 vehicles a day, roughly 8% of them trucks, projected to reach 10,200 by 2040. The structure is 82 ft (24.9 m) long and 36 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesNC133
CrossesMallory Creek
Location4 MI S. Jct. US17
RouteState Highway 133
Coordinates34.17259, -77.99027
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating65.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length82 ft (24.9 m)
Longest span39 ft (11.8 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,100 (2021)
Projected traffic10,200 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 NC133 over Mallory Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is NC133 over Mallory Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does NC133 over Mallory Creek carry?

About 5,100 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is NC133 over Mallory Creek?

The structure is 82 ft (24.9 m) long with a longest span of 39 ft (11.8 m) and a deck 36 ft wide.

Who owns NC133 over Mallory Creek?

It is owned by the State Highway Agency.