US Bridges

SB 19; FAP 001 over Mariposa Canyon

Fair

Santa Cruz County, Arizona · 1.3 MI N JCT SR 82 · Structure no. 00324

Built
1968
57 years old, rebuilt 2006
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
129 ft
4 main spans
Daily traffic
18,989
2023 count
Owner
State
State Highway Agency

About this bridge

SB 19; FAP 001 over Mariposa Canyon is a concrete continuous slab carrying SB 19; FAP 001 over Mariposa Canyon in Santa Cruz County, Arizona. It was built in 1968 and reconstructed in 2006, so it is 57 years old, older than the Arizona average of 47.8 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 18,989 vehicles a day, roughly 9% of them trucks, projected to reach 18,999 by 2042. The structure is 129 ft (39.3 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSB 19; FAP 001
CrossesMariposa Canyon
Location1.3 MI N JCT SR 82
RouteState Highway 19
CountySanta Cruz County
StateArizona
Coordinates31.3697, -110.9314
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length129 ft (39.3 m)
Longest span35 ft (10.7 m)
Deck width80 ft (24.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,989 (2023)
Projected traffic18,999 by 2042
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SB 19; FAP 001 over Mariposa Canyon built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2006.

What condition is SB 19; FAP 001 over Mariposa Canyon 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 April 2024.

How much traffic does SB 19; FAP 001 over Mariposa Canyon carry?

About 18,989 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SB 19; FAP 001 over Mariposa Canyon?

The structure is 129 ft (39.3 m) long with a longest span of 35 ft (10.7 m) and a deck 80 ft wide.

Who owns SB 19; FAP 001 over Mariposa Canyon?

It is owned by the State Highway Agency.