US Bridges

SR1170 over Duffs Creek

Fair

Duplin County, North Carolina · 0.2 MI N JCT SR1136 · Structure no. 000000000610056

Built
2001
24 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
123 ft
2 main spans
Daily traffic
1,700
2019 count
Owner
State
State Highway Agency

About this bridge

SR1170 over Duffs Creek is a prestressed concrete slab carrying SR1170 over Duffs Creek in Duplin County, North Carolina. It was built in 2001, so it is 24 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,700 vehicles a day, roughly 6% of them trucks, projected to reach 3,400 by 2040. The structure is 123 ft (37.4 m) long and 30 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1170
CrossesDuffs Creek
Location0.2 MI N JCT SR1136
RouteState Highway 1170
CountyDuplin County
StateNorth Carolina
Coordinates34.7549, -78.0555
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating79.9 US tons
Inventory rating47 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length123 ft (37.4 m)
Longest span59 ft (17.9 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2019)
Projected traffic3,400 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 SR1170 over Duffs Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR1170 over Duffs Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does SR1170 over Duffs Creek carry?

About 1,700 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is SR1170 over Duffs Creek?

The structure is 123 ft (37.4 m) long with a longest span of 59 ft (17.9 m) and a deck 30 ft wide.

Who owns SR1170 over Duffs Creek?

It is owned by the State Highway Agency.