US Bridges

N125-W8 Connector over LA Mesa Bl & W8-LA Mesa

Fair

San Diego County, California · 11-SD-125-R15.43-LMSA · Structure no. 57 0953G

Built
1989
36 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
382 ft
2 main spans
Daily traffic
9,700
2020 count
Owner
State
State Highway Agency

About this bridge

N125-W8 Connector over LA Mesa Bl & W8-LA Mesa is a prestressed concrete continuous box beam or girders - multiple carrying N125-W8 Connector over LA Mesa Bl & W8-LA Mesa in San Diego County, California. It was built in 1989, so it is 36 years old, younger 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 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 9,700 vehicles a day, roughly 2% of them trucks, projected to reach 16,139 by 2042. The structure is 382 ft (116.4 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN125-W8 Connector
CrossesLA Mesa Bl & W8-LA Mesa
Location11-SD-125-R15.43-LMSA
RouteState Highway 125
CountySan Diego County
StateCalifornia
Coordinates32.77741, -117.00497
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
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 spans2
Design loadHS 20
Structure length382 ft (116.4 m)
Longest span189 ft (57.6 m)
Deck width41 ft (12.4 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deck19 ft (5.8 m)

Traffic and service

Average daily traffic9,700 (2020)
Projected traffic16,139 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 N125-W8 Connector over LA Mesa Bl & W8-LA Mesa built?

It was built in 1989, making it 36 years old in 2025.

What condition is N125-W8 Connector over LA Mesa Bl & W8-LA Mesa 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 August 2024.

How much traffic does N125-W8 Connector over LA Mesa Bl & W8-LA Mesa carry?

About 9,700 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is N125-W8 Connector over LA Mesa Bl & W8-LA Mesa?

The structure is 382 ft (116.4 m) long with a longest span of 189 ft (57.6 m) and a deck 41 ft wide.

Who owns N125-W8 Connector over LA Mesa Bl & W8-LA Mesa?

It is owned by the State Highway Agency.