Structure 57 0377 · San Diego County, CA

Interstate 8 over Mollison AVE

Carries Interstate 8 over Mollison AVE, 11-sd-008-16.47-ecj.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT78 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 5/9 · sets the rating

78 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built1961rebuilt 1968
Length78.1 ft23.8 m
Daily traffic117,000counted 2014
Last inspectedJune 2024every 24 months

Location

StateCalifornia
CountySan Diego
Location11-sd-008-16.47-ecj
CarriesInterstate 8
CrossesMollison AVE
Coordinates32.80290, -116.95113

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length78.1 ft (23.8 m)
Max Span77.1 ft (23.5 m)
Deck Width142.7 ft (43.5 m)
Deck Area1035.3 sq m
Main Spans1
Year Built1961 (reconstructed 1968)

Traffic

Avg Daily Traffic117,000 (2014)
Truck Traffic3%
Lanes On Bridge6
Lanes Under Bridge5

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number57 0377

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges