US Bridges

SR1611 over Mill Swamp

Good

Craven County, North Carolina · 0.1 Mi.N. JCT.SR1613 · Structure no. 000000000490013

Built
2002
23 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
107 ft
6 main spans
Daily traffic
400
2018 count
Owner
State
State Highway Agency

About this bridge

SR1611 over Mill Swamp is a prestressed concrete slab carrying SR1611 over Mill Swamp in Craven County, North Carolina. It was built in 2002, so it is 23 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 400 vehicles a day, roughly 6% of them trucks, projected to reach 800 by 2040. The structure is 107 ft (32.6 m) long and 30 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesSR1611
CrossesMill Swamp
Location0.1 Mi.N. JCT.SR1613
RouteState Highway 1611
Coordinates35.16044, -76.99372
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 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 rating95.9 US tons
Inventory rating57 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20 + Mod
Structure length107 ft (32.6 m)
Longest span35 ft (10.6 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2018)
Projected traffic800 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 SR1611 over Mill Swamp built?

It was built in 2002, making it 23 years old in 2025.

What condition is SR1611 over Mill Swamp 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 January 2025.

How much traffic does SR1611 over Mill Swamp carry?

About 400 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is SR1611 over Mill Swamp?

The structure is 107 ft (32.6 m) long with a longest span of 35 ft (10.6 m) and a deck 30 ft wide.

Who owns SR1611 over Mill Swamp?

It is owned by the State Highway Agency.