US Bridges

SR1128 over Pine Swamp Creek

Fair

Alleghany County, North Carolina · 150 FT.E.JCT.SR1172 · Structure no. 000000000050056

Built
2001
24 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
380
2016 count
Owner
State
State Highway Agency

About this bridge

SR1128 over Pine Swamp Creek is a concrete continuous culvert carrying SR1128 over Pine Swamp Creek in Alleghany County, North Carolina. It was built in 2001, so it is 24 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 380 vehicles a day, roughly 6% of them trucks, projected to reach 760 by 2040. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesSR1128
CrossesPine Swamp Creek
Location150 FT.E.JCT.SR1172
RouteState Highway 1128
Coordinates36.4762, -81.11714
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length29 ft (8.8 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic380 (2016)
Projected traffic760 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 SR1128 over Pine Swamp Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR1128 over Pine Swamp 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 June 2024.

How much traffic does SR1128 over Pine Swamp Creek carry?

About 380 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is SR1128 over Pine Swamp Creek?

The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.6 m).

Who owns SR1128 over Pine Swamp Creek?

It is owned by the State Highway Agency.