US Bridges

SR1120 over Knap of Reeds Creek

Fair

Granville County, North Carolina · 0.1 MI E JCT SR1104 · Structure no. 000000000770226

Built
2005
20 years old
Condition
Fair
inspected February 2024
Type
Slab
Prestressed Concrete
Length
174 ft
3 main spans
Daily traffic
2,400
2021 count
Owner
State
State Highway Agency

About this bridge

SR1120 over Knap of Reeds Creek is a prestressed concrete slab carrying SR1120 over Knap of Reeds Creek in Granville County, North Carolina. It was built in 2005, so it is 20 years old, younger 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 2,400 vehicles a day, roughly 7% of them trucks, projected to reach 4,800 by 2040. The structure is 174 ft (53 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR1120
CrossesKnap of Reeds Creek
Location0.1 MI E JCT SR1104
RouteState Highway 1120
Coordinates36.14328, -78.78845
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.9 US tons
Inventory rating39.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length174 ft (53 m)
Longest span57 ft (17.3 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2021)
Projected traffic4,800 by 2040
Trucks7%
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 SR1120 over Knap of Reeds Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is SR1120 over Knap of Reeds 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 February 2024.

How much traffic does SR1120 over Knap of Reeds Creek carry?

About 2,400 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1120 over Knap of Reeds Creek?

The structure is 174 ft (53 m) long with a longest span of 57 ft (17.3 m) and a deck 39 ft wide.

Who owns SR1120 over Knap of Reeds Creek?

It is owned by the State Highway Agency.