US Bridges

SR1644 over Cr. Off Palmetto Swp.

Fair

Craven County, North Carolina · 0.3 Mi.E. of JCT.US17 · Structure no. 000000000490253

Built
1962
63 years old
Condition
Fair
inspected December 2023
Type
Culvert
Steel
Length
21 ft
3 main spans
Daily traffic
150
2022 count
Owner
State
State Highway Agency

About this bridge

SR1644 over Cr. Off Palmetto Swp. is a steel culvert carrying SR1644 over Cr. Off Palmetto Swp. in Craven County, North Carolina. It was built in 1962, so it is 63 years old, older 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 5 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 150 vehicles a day, roughly 6% of them trucks, projected to reach 300 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR1644
CrossesCr. Off Palmetto Swp.
Location0.3 Mi.E. of JCT.US17
RouteState Highway 1644
CountyCraven County
StateNorth Carolina
Coordinates35.37422, -77.14494
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic300 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 SR1644 over Cr. Off Palmetto Swp. built?

It was built in 1962, making it 63 years old in 2025.

What condition is SR1644 over Cr. Off Palmetto Swp. 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 December 2023.

How much traffic does SR1644 over Cr. Off Palmetto Swp. carry?

About 150 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR1644 over Cr. Off Palmetto Swp.?

The structure is 21 ft (6.4 m) long with a longest span of 6 ft (1.8 m).

Who owns SR1644 over Cr. Off Palmetto Swp.?

It is owned by the State Highway Agency.