Structure 57 0720R · San Diego County, CA

Interstate 805 NB over I-8 Rmps Sts Sdriv Rails

Carries Interstate 805 NB over I-8 Rmps Sts Sdriv Rails, 11-sd-805-17.46-sd.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,910 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

3,910 ft end to end, longest span 300 ft: about 11 football fields. Lengths and the semi-truck 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.

Built197254 years old
Length3910.1 ft1191.8 m
Daily traffic109,000counted 2022
Last inspectedAugust 2024every 24 months

Location

StateCalifornia
CountySan Diego
Location11-sd-805-17.46-sd
CarriesInterstate 805 NB
CrossesI-8 Rmps Sts Sdriv Rails
Coordinates32.76966, -117.13028

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length3910.1 ft (1191.8 m)
Max Span299.9 ft (91.4 m)
Deck Width67.9 ft (20.7 m)
Deck Area24670.3 sq m
Main Spans13
Year Built1972

Traffic

Avg Daily Traffic109,000 (2022)
Truck Traffic7%
Lanes On Bridge4
Lanes Under Bridge32

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number57 0720R

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