US Bridges

Mimosa Ave. over Aqua Hedionda Creek

Good

San Diego County, California · 0.25 M W/O Smilax RD · Structure no. 57C0754

Built
1961
64 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
494
2016 count
Owner
County
County Highway Agency

About this bridge

Mimosa Ave. over Aqua Hedionda Creek is a concrete culvert carrying Mimosa Ave. over Aqua Hedionda Creek 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 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 494 vehicles a day, roughly 1% of them trucks, projected to reach 628 by 2045. The structure is 22 ft (6.6 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesMimosa Ave.
CrossesAqua Hedionda Creek
Location0.25 M W/O Smilax RD
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates33.15996, -117.20974
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.6 m)
Longest span6 ft (1.8 m)
Deck width49 ft (15 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic494 (2016)
Projected traffic628 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mimosa Ave. over Aqua Hedionda Creek built?

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

What condition is Mimosa Ave. over Aqua Hedionda Creek 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 May 2023.

How much traffic does Mimosa Ave. over Aqua Hedionda Creek carry?

About 494 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Mimosa Ave. over Aqua Hedionda Creek?

The structure is 22 ft (6.6 m) long with a longest span of 6 ft (1.8 m) and a deck 49 ft wide.

Who owns Mimosa Ave. over Aqua Hedionda Creek?

It is owned by the County Highway Agency.