US Bridges

N5-6th Av Off Ramp over N&S163-N5 Conn Ramps

Fair

San Diego County, California · 11-SD-005-R16.17-SD · Structure no. 57 0397S

Built
1961
64 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
352 ft
3 main spans
Daily traffic
15,100
2020 count
Owner
State
State Highway Agency

About this bridge

N5-6th Av Off Ramp over N&S163-N5 Conn Ramps is a concrete continuous box beam or girders - multiple carrying N5-6th Av Off Ramp over N&S163-N5 Conn Ramps in San Diego County, California. It was built in 1961, so it is 64 years old, older than the California average of 54.8 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 15,100 vehicles a day, roughly 2% of them trucks, projected to reach 24,730 by 2040. The structure is 352 ft (107.3 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN5-6th Av Off Ramp
CrossesN&S163-N5 Conn Ramps
Location11-SD-005-R16.17-SD
RouteInterstate 5
CountySan Diego County
StateCalifornia
Coordinates32.72423, -117.15697
Functional classUrban Principal Arterial - Interstate

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.
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length352 ft (107.3 m)
Longest span152 ft (46.3 m)
Deck width26 ft (8 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,100 (2020)
Projected traffic24,730 by 2040
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 N5-6th Av Off Ramp over N&S163-N5 Conn Ramps built?

It was built in 1961, making it 64 years old in 2025.

What condition is N5-6th Av Off Ramp over N&S163-N5 Conn Ramps 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 June 2023.

How much traffic does N5-6th Av Off Ramp over N&S163-N5 Conn Ramps carry?

About 15,100 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is N5-6th Av Off Ramp over N&S163-N5 Conn Ramps?

The structure is 352 ft (107.3 m) long with a longest span of 152 ft (46.3 m) and a deck 26 ft wide.

Who owns N5-6th Av Off Ramp over N&S163-N5 Conn Ramps?

It is owned by the State Highway Agency.