US Bridges

E8-MISSION Center over E8-N163 & N163-E8 Ramps

Good

San Diego County, California · 11-SD-008-2.56-SD · Structure no. 57 0358S

Built
1978
47 years old
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
745 ft
1 main span
Daily traffic
5,800
2014 count
Owner
State
State Highway Agency

About this bridge

E8-MISSION Center over E8-N163 & N163-E8 Ramps is a prestressed concrete continuous box beam or girders - multiple carrying E8-MISSION Center over E8-N163 & N163-E8 Ramps in San Diego County, California. It was built in 1978, so it is 47 years old, younger than the California average of 54.8 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 5,800 vehicles a day, roughly 2% of them trucks, projected to reach 10,977 by 2046. The structure is 745 ft (227.1 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesE8-MISSION Center
CrossesE8-N163 & N163-E8 Ramps
Location11-SD-008-2.56-SD
RouteInterstate 8
CountySan Diego County
StateCalifornia
Coordinates32.76313, -117.1616
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHS 20
Structure length745 ft (227.1 m)
Longest span214 ft (65.2 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2014)
Projected traffic10,977 by 2046
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 E8-MISSION Center over E8-N163 & N163-E8 Ramps built?

It was built in 1978, making it 47 years old in 2025.

What condition is E8-MISSION Center over E8-N163 & N163-E8 Ramps 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 February 2024.

How much traffic does E8-MISSION Center over E8-N163 & N163-E8 Ramps carry?

About 5,800 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is E8-MISSION Center over E8-N163 & N163-E8 Ramps?

The structure is 745 ft (227.1 m) long with a longest span of 214 ft (65.2 m) and a deck 28 ft wide.

Who owns E8-MISSION Center over E8-N163 & N163-E8 Ramps?

It is owned by the State Highway Agency.