US Bridges

NC305 over Ahoskie Swamp

Good

Hertford County, North Carolina · 1.0 MI S JCT NC561 · Structure no. 000000000910022

Built
1963
62 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
3 main spans
Daily traffic
700
2021 count
Owner
State
State Highway Agency

About this bridge

NC305 over Ahoskie Swamp is a steel stringer/multi-beam or girder carrying NC305 over Ahoskie Swamp in Hertford County, North Carolina. It was built in 1963, so it is 62 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 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 700 vehicles a day, roughly 7% of them trucks, projected to reach 1,400 by 2040. The structure is 106 ft (32.3 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesNC305
CrossesAhoskie Swamp
Location1.0 MI S JCT NC561
RouteState Highway 305
Coordinates36.28124, -77.16538
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length106 ft (32.3 m)
Longest span34 ft (10.3 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2021)
Projected traffic1,400 by 2040
Trucks7%
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 NC305 over Ahoskie Swamp built?

It was built in 1963, making it 62 years old in 2025.

What condition is NC305 over Ahoskie 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 October 2023.

How much traffic does NC305 over Ahoskie Swamp carry?

About 700 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is NC305 over Ahoskie Swamp?

The structure is 106 ft (32.3 m) long with a longest span of 34 ft (10.3 m) and a deck 33 ft wide.

Who owns NC305 over Ahoskie Swamp?

It is owned by the State Highway Agency.