US Bridges

SR1690 over Knob Creek

Good

Henderson County, North Carolina · .3 MI.S.JCT.SR1419 · Structure no. 000000000890107

Built
2020
5 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
129 ft
1 main span
Daily traffic
1,500
2017 count
Owner
State
State Highway Agency

About this bridge

SR1690 over Knob Creek is a prestressed concrete stringer/multi-beam or girder carrying SR1690 over Knob Creek in Henderson County, North Carolina. It was built in 2020, so it is 5 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 1,500 vehicles a day, roughly 7% of them trucks, projected to reach 3,000 by 2040. The structure is 129 ft (39.3 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR1690
CrossesKnob Creek
Location.3 MI.S.JCT.SR1419
RouteState Highway 1690
CountyHenderson County
StateNorth Carolina
Coordinates35.42322, -82.55235
Functional classUrban Local

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 protection9 ExcellentNo problems noted.
Last inspectionJune 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.9 US tons
Inventory rating61.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length129 ft (39.3 m)
Longest span124 ft (37.7 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2017)
Projected traffic3,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-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 SR1690 over Knob Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is SR1690 over Knob Creek 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 SR1690 over Knob Creek carry?

About 1,500 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is SR1690 over Knob Creek?

The structure is 129 ft (39.3 m) long with a longest span of 124 ft (37.7 m) and a deck 36 ft wide.

Who owns SR1690 over Knob Creek?

It is owned by the State Highway Agency.