US Bridges

SR1635 over Knob Creek

FairPosted for load

Cleveland County, North Carolina · 1.3 Mi. E. Jct. SR1670 · Structure no. 000000000450165

Built
1952
73 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
121 ft
3 main spans
Daily traffic
510
2016 count
Owner
State
State Highway Agency

About this bridge

SR1635 over Knob Creek is a steel stringer/multi-beam or girder carrying SR1635 over Knob Creek in Cleveland County, North Carolina. It was built in 1952, so it is 73 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. Its operating status is: posted for load restriction.

It carries about 510 vehicles a day, roughly 6% of them trucks, projected to reach 1,020 by 2040. The structure is 121 ft (36.8 m) long and 20 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSR1635
CrossesKnob Creek
Location1.3 Mi. E. Jct. SR1670
RouteState Highway 1635
CountyCleveland County
StateNorth Carolina
Coordinates35.48476, -81.54954
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating17 US tons
Inventory rating9.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans3
Design loadUnknown
Structure length121 ft (36.8 m)
Longest span40 ft (12.1 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic510 (2016)
Projected traffic1,020 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1635 over Knob Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is SR1635 over Knob Creek 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 January 2025.

How much traffic does SR1635 over Knob Creek carry?

About 510 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is SR1635 over Knob Creek?

The structure is 121 ft (36.8 m) long with a longest span of 40 ft (12.1 m) and a deck 20 ft wide.

Who owns SR1635 over Knob Creek?

It is owned by the State Highway Agency.