US Bridges

State Route 17 SB over LA Madrona Drive

Good

Santa Cruz County, California · 05-SCR-017-1.38 · Structure no. 36 0079L

Built
1960
65 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
32,500
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 17 SB over LA Madrona Drive is a concrete continuous tee beam carrying State Route 17 SB over LA Madrona Drive in Santa Cruz County, California. It was built in 1960, so it is 65 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 32,500 vehicles a day, roughly 3% of them trucks, projected to reach 53,891 by 2042. The structure is 125 ft (38.1 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesState Route 17 SB
CrossesLA Madrona Drive
Location05-SCR-017-1.38
RouteState Highway 17
Coordinates37.00852, -122.02161
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating32.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span48 ft (14.6 m)
Deck width43 ft (13.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,500 (2009)
Projected traffic53,891 by 2042
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 State Route 17 SB over LA Madrona Drive built?

It was built in 1960, making it 65 years old in 2025.

What condition is State Route 17 SB over LA Madrona Drive 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 June 2024.

How much traffic does State Route 17 SB over LA Madrona Drive carry?

About 32,500 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is State Route 17 SB over LA Madrona Drive?

The structure is 125 ft (38.1 m) long with a longest span of 48 ft (14.6 m) and a deck 43 ft wide.

Who owns State Route 17 SB over LA Madrona Drive?

It is owned by the State Highway Agency.