US Bridges

Main Street over US Highway 101

Fair

Monterey County, California · 05-MON-101-76.97 · Structure no. 44 0128

Built
1958
67 years old
Condition
Fair
inspected May 2024
Type
Slab
Prestressed Concrete Continuous
Length
117 ft
2 main spans
Daily traffic
12,500
2006 count
Owner
State
State Highway Agency

About this bridge

Main Street over US Highway 101 is a prestressed concrete continuous slab carrying Main Street over US Highway 101 in Monterey County, California. It was built in 1958, so it is 67 years old, older 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 12,500 vehicles a day, roughly 5% of them trucks, projected to reach 50,031 by 2042. The structure is 117 ft (35.8 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMain Street
CrossesUS Highway 101
Location05-MON-101-76.97
RouteCity Street 0
Coordinates36.56926, -121.5181
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length117 ft (35.8 m)
Longest span58 ft (17.7 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,500 (2006)
Projected traffic50,031 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 Main Street over US Highway 101 built?

It was built in 1958, making it 67 years old in 2025.

What condition is Main Street over US Highway 101 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 May 2024.

How much traffic does Main Street over US Highway 101 carry?

About 12,500 vehicles per day (2006 count), of which roughly 5% are trucks.

How long is Main Street over US Highway 101?

The structure is 117 ft (35.8 m) long with a longest span of 58 ft (17.7 m) and a deck 36 ft wide.

Who owns Main Street over US Highway 101?

It is owned by the State Highway Agency.