US Bridges

SR1709 over I85

Fair

Orange County, North Carolina · 0.3 Mi. N. Jct. SR1710 · Structure no. 000000001350095

Built
1957
68 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
221 ft
4 main spans
Daily traffic
4,700
2022 count
Owner
State
State Highway Agency

About this bridge

SR1709 over I85 is a prestressed concrete stringer/multi-beam or girder carrying SR1709 over I85 in Orange County, North Carolina. It was built in 1957, so it is 68 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 5 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 4,700 vehicles a day, roughly 7% of them trucks, projected to reach 9,400 by 2040. The structure is 221 ft (67.3 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1709
CrossesI85
Location0.3 Mi. N. Jct. SR1710
RouteState Highway 1709
CountyOrange County
StateNorth Carolina
Coordinates36.05397, -79.06794
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating52.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length221 ft (67.3 m)
Longest span57 ft (17.3 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2022)
Projected traffic9,400 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1709 over I85 built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR1709 over I85 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 October 2023.

How much traffic does SR1709 over I85 carry?

About 4,700 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1709 over I85?

The structure is 221 ft (67.3 m) long with a longest span of 57 ft (17.3 m) and a deck 32 ft wide.

Who owns SR1709 over I85?

It is owned by the State Highway Agency.