US Bridges

SR1614 over Flat River

Fair

Durham County, North Carolina · 1.0MI E.Jct SR1601 · Structure no. 000000000630151

Built
2013
12 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
76 ft
3 main spans
Daily traffic
100
2000 count
Owner
State
State Highway Agency

About this bridge

SR1614 over Flat River is a steel continuous stringer/multi-beam or girder carrying SR1614 over Flat River in Durham County, North Carolina. It was built in 2013, so it is 12 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 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 100 vehicles a day, roughly 6% of them trucks, projected to reach 200 by 2040. The structure is 76 ft (23.1 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR1614
CrossesFlat River
Location1.0MI E.Jct SR1601
RouteState Highway 1614
CountyDurham County
StateNorth Carolina
Coordinates36.20032, -78.8863
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.9 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans3
Design loadHS 20 + Mod
Structure length76 ft (23.1 m)
Longest span25 ft (7.6 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2000)
Projected traffic200 by 2040
Trucks6%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 SR1614 over Flat River built?

It was built in 2013, making it 12 years old in 2025.

What condition is SR1614 over Flat River 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 SR1614 over Flat River carry?

About 100 vehicles per day (2000 count), of which roughly 6% are trucks.

How long is SR1614 over Flat River?

The structure is 76 ft (23.1 m) long with a longest span of 25 ft (7.6 m) and a deck 16 ft wide.

Who owns SR1614 over Flat River?

It is owned by the State Highway Agency.