US Bridges

NC9 over Green River

Fair

Polk County, North Carolina · .9 MI.N.JCT.SR1140 · Structure no. 000000001490037

Built
1936
89 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
157 ft
3 main spans
Daily traffic
4,000
2022 count
Owner
State
State Highway Agency

About this bridge

NC9 over Green River is a concrete tee beam carrying NC9 over Green River in Polk County, North Carolina. It was built in 1936, so it is 89 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 4,000 vehicles a day, roughly 7% of them trucks, projected to reach 8,000 by 2040. The structure is 157 ft (47.8 m) long and 27 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesNC9
CrossesGreen River
Location.9 MI.N.JCT.SR1140
RouteState Highway 9
CountyPolk County
StateNorth Carolina
Coordinates35.33355, -82.18511
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.9 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length157 ft (47.8 m)
Longest span52 ft (15.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2022)
Projected traffic8,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 NC9 over Green River built?

It was built in 1936, making it 89 years old in 2025.

What condition is NC9 over Green River 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 July 2023.

How much traffic does NC9 over Green River carry?

About 4,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is NC9 over Green River?

The structure is 157 ft (47.8 m) long with a longest span of 52 ft (15.8 m) and a deck 27 ft wide.

Who owns NC9 over Green River?

It is owned by the State Highway Agency.