US Bridges

SR1671 over I85 US15

Good

Durham County, North Carolina · 0.25 Mi. E. Jct. SR1636 · Structure no. 000000000630193

Built
2015
10 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
206 ft
4 main spans
Daily traffic
9,000
2021 count
Owner
State
State Highway Agency

About this bridge

SR1671 over I85 US15 is a steel continuous stringer/multi-beam or girder carrying SR1671 over I85 US15 in Durham County, North Carolina. It was built in 2015, so it is 10 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 9,000 vehicles a day, roughly 7% of them trucks, projected to reach 18,000 by 2040. The structure is 206 ft (62.7 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1671
CrossesI85 US15
Location0.25 Mi. E. Jct. SR1636
RouteState Highway 1671
CountyDurham County
StateNorth Carolina
Coordinates36.02573, -78.85103
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating82.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHL 93
Structure length206 ft (62.7 m)
Longest span60 ft (18.2 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (2021)
Projected traffic18,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 SR1671 over I85 US15 built?

It was built in 2015, making it 10 years old in 2025.

What condition is SR1671 over I85 US15 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 2023.

How much traffic does SR1671 over I85 US15 carry?

About 9,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1671 over I85 US15?

The structure is 206 ft (62.7 m) long with a longest span of 60 ft (18.2 m) and a deck 33 ft wide.

Who owns SR1671 over I85 US15?

It is owned by the State Highway Agency.