US Bridges

NC87 over Mill Race

Good

Alamance County, North Carolina · 0.1 Mi. N. Jct. SR1558 · Structure no. 000000000010126

Built
2019
6 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
4,900
2021 count
Owner
State
State Highway Agency

About this bridge

NC87 over Mill Race is a prestressed concrete stringer/multi-beam or girder carrying NC87 over Mill Race in Alamance County, North Carolina. It was built in 2019, so it is 6 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 4,900 vehicles a day, roughly 8% of them trucks, projected to reach 9,800 by 2040. The structure is 73 ft (22.2 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesNC87
CrossesMill Race
Location0.1 Mi. N. Jct. SR1558
RouteState Highway 87
Coordinates36.18342, -79.51024
Functional classRural Minor Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating76.9 US tons
Inventory rating52.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length73 ft (22.2 m)
Longest span69 ft (21 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2021)
Projected traffic9,800 by 2040
Trucks8%
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 NC87 over Mill Race built?

It was built in 2019, making it 6 years old in 2025.

What condition is NC87 over Mill Race 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 June 2024.

How much traffic does NC87 over Mill Race carry?

About 4,900 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is NC87 over Mill Race?

The structure is 73 ft (22.2 m) long with a longest span of 69 ft (21 m) and a deck 42 ft wide.

Who owns NC87 over Mill Race?

It is owned by the State Highway Agency.