US Bridges

SR1150 over Rock Creek

Fair

Alexander County, North Carolina · 0.3 Mi. W. Jct. SR1155 · Structure no. 000000000030301

Built
2011
14 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
1,900
2021 count
Owner
State
State Highway Agency

About this bridge

SR1150 over Rock Creek is a steel culvert carrying SR1150 over Rock Creek in Alexander County, North Carolina. It was built in 2011, so it is 14 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 1,900 vehicles a day, roughly 6% of them trucks, projected to reach 3,800 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1150
CrossesRock Creek
Location0.3 Mi. W. Jct. SR1155
RouteState Highway 1150
CountyAlexander County
StateNorth Carolina
Coordinates35.84936, -81.29542
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2021)
Projected traffic3,800 by 2040
Trucks6%
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 SR1150 over Rock Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is SR1150 over Rock 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 September 2024.

How much traffic does SR1150 over Rock Creek carry?

About 1,900 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1150 over Rock Creek?

The structure is 21 ft (6.4 m) long with a longest span of 8 ft (2.4 m).

Who owns SR1150 over Rock Creek?

It is owned by the State Highway Agency.