US Bridges

Lomand ST over San Lorenzo River

Poor

Santa Cruz County, California · 0.5 MI E SR 9 · Structure no. 36C0055

Built
1941
84 years old
Condition
Poor
inspected November 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
3,000
2015 count
Owner
County
County Highway Agency

About this bridge

Lomand ST over San Lorenzo River is a concrete continuous box beam or girders - multiple carrying Lomand ST over San Lorenzo River in Santa Cruz County, California. It was built in 1941, so it is 84 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,000 vehicles a day, roughly 5% of them trucks, projected to reach 5,118 by 2042. The structure is 105 ft (32 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLomand ST
CrossesSan Lorenzo River
Location0.5 MI E SR 9
RouteCounty Highway 0
Coordinates37.12571, -122.11918
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating57.9 US tons
Inventory rating44.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length105 ft (32 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2015)
Projected traffic5,118 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$500,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lomand ST over San Lorenzo River built?

It was built in 1941, making it 84 years old in 2025.

What condition is Lomand ST over San Lorenzo River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does Lomand ST over San Lorenzo River carry?

About 3,000 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Lomand ST over San Lorenzo River?

The structure is 105 ft (32 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns Lomand ST over San Lorenzo River?

It is owned by the County Highway Agency.