US Bridges

SR1115 over I85 US421

Good

Guilford County, North Carolina · 0.4 Mi. N. Jct. US220 · Structure no. 000000000810803

Built
2003
22 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
402 ft
4 main spans
Daily traffic
1,800
2021 count
Owner
State
State Highway Agency

About this bridge

SR1115 over I85 US421 is a steel continuous stringer/multi-beam or girder carrying SR1115 over I85 US421 in Guilford County, North Carolina. It was built in 2003, so it is 22 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,800 vehicles a day, roughly 7% of them trucks, projected to reach 3,600 by 2040. The structure is 402 ft (122.5 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1115
CrossesI85 US421
Location0.4 Mi. N. Jct. US220
RouteState Highway 1115
Coordinates36.0019, -79.82017
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating76.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length402 ft (122.5 m)
Longest span102 ft (31 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2021)
Projected traffic3,600 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1115 over I85 US421 built?

It was built in 2003, making it 22 years old in 2025.

What condition is SR1115 over I85 US421 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does SR1115 over I85 US421 carry?

About 1,800 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1115 over I85 US421?

The structure is 402 ft (122.5 m) long with a longest span of 102 ft (31 m) and a deck 33 ft wide.

Who owns SR1115 over I85 US421?

It is owned by the State Highway Agency.