US Bridges

US Highway 101 SB over Lockwood-San Lucas Road

Fair

Monterey County, California · 05-MON-101-R29.90 · Structure no. 44 0183L

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
7,450
2009 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 SB over Lockwood-San Lucas Road is a prestressed concrete box beam or girders - multiple carrying US Highway 101 SB over Lockwood-San Lucas Road in Monterey County, California. It was built in 1971, so it is 54 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 7,450 vehicles a day, roughly 18% of them trucks, projected to reach 13,520 by 2043. The structure is 96 ft (29.2 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS Highway 101 SB
CrossesLockwood-San Lucas Road
Location05-MON-101-R29.90
RouteU.S. Route 101
Coordinates36.09368, -121.02156
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating32.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length96 ft (29.2 m)
Longest span94 ft (28.7 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,450 (2009)
Projected traffic13,520 by 2043
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 US Highway 101 SB over Lockwood-San Lucas Road built?

It was built in 1971, making it 54 years old in 2025.

What condition is US Highway 101 SB over Lockwood-San Lucas Road 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 October 2023.

How much traffic does US Highway 101 SB over Lockwood-San Lucas Road carry?

About 7,450 vehicles per day (2009 count), of which roughly 18% are trucks.

How long is US Highway 101 SB over Lockwood-San Lucas Road?

The structure is 96 ft (29.2 m) long with a longest span of 94 ft (28.7 m) and a deck 41 ft wide.

Who owns US Highway 101 SB over Lockwood-San Lucas Road?

It is owned by the State Highway Agency.