US Bridges

SR1621 over Drowning Creek

Fair

Burke County, North Carolina · .7 MI.S.JCT.SR1611 · Structure no. 000000000230354

Built
1955
70 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
33 ft
3 main spans
Daily traffic
3,400
2021 count
Owner
State
State Highway Agency

About this bridge

SR1621 over Drowning Creek is a concrete continuous culvert carrying SR1621 over Drowning Creek in Burke County, North Carolina. It was built in 1955, so it is 70 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 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 3,400 vehicles a day, roughly 6% of them trucks, projected to reach 6,800 by 2040. The structure is 33 ft (10 m) long. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSR1621
CrossesDrowning Creek
Location.7 MI.S.JCT.SR1611
RouteState Highway 1621
Coordinates35.75051, -81.44232
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length33 ft (10 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2021)
Projected traffic6,800 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 SR1621 over Drowning Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR1621 over Drowning 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 November 2023.

How much traffic does SR1621 over Drowning Creek carry?

About 3,400 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1621 over Drowning Creek?

The structure is 33 ft (10 m) long with a longest span of 10 ft (3 m).

Who owns SR1621 over Drowning Creek?

It is owned by the State Highway Agency.