US Bridges

SR4121 over Bull Run Creek

Fair

Guilford County, North Carolina · 0.5 Mi. N. Jct. SR1546 · Structure no. 000000000810058

Built
1927
98 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
6,800
2021 count
Owner
State
State Highway Agency

About this bridge

SR4121 over Bull Run Creek is a concrete continuous culvert carrying SR4121 over Bull Run Creek in Guilford County, North Carolina. It was built in 1927, so it is 98 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 6,800 vehicles a day, roughly 12% of them trucks, projected to reach 13,600 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR4121
CrossesBull Run Creek
Location0.5 Mi. N. Jct. SR1546
RouteState Highway 4121
CountyGuilford County
StateNorth Carolina
Coordinates35.99801, -79.92711
Functional classUrban Other Principal Arterial

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 inspectionJuly 2023
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
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,800 (2021)
Projected traffic13,600 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 SR4121 over Bull Run Creek built?

It was built in 1927, making it 98 years old in 2025.

What condition is SR4121 over Bull Run 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 July 2023.

How much traffic does SR4121 over Bull Run Creek carry?

About 6,800 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is SR4121 over Bull Run Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns SR4121 over Bull Run Creek?

It is owned by the State Highway Agency.