US Bridges

NC45 NC308 over Conaby Creek

Fair

Washington County, North Carolina · 0.4 MI N. of JCT SR1300 · Structure no. 000000001870009

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
241 ft
4 main spans
Daily traffic
3,300
2018 count
Owner
State
State Highway Agency

About this bridge

NC45 NC308 over Conaby Creek is a prestressed concrete stringer/multi-beam or girder carrying NC45 NC308 over Conaby Creek in Washington County, North Carolina. It was built in 1967, so it is 58 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 3,300 vehicles a day, roughly 7% of them trucks, projected to reach 6,600 by 2040. The structure is 241 ft (73.4 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesNC45 NC308
CrossesConaby Creek
Location0.4 MI N. of JCT SR1300
RouteState Highway 45
Coordinates35.89633, -76.70608
Functional classRural Major Collector

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating99 US tons
Inventory rating51.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length241 ft (73.4 m)
Longest span59 ft (17.9 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2018)
Projected traffic6,600 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC45 NC308 over Conaby Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is NC45 NC308 over Conaby 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 April 2023.

How much traffic does NC45 NC308 over Conaby Creek carry?

About 3,300 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is NC45 NC308 over Conaby Creek?

The structure is 241 ft (73.4 m) long with a longest span of 59 ft (17.9 m) and a deck 33 ft wide.

Who owns NC45 NC308 over Conaby Creek?

It is owned by the State Highway Agency.