US Bridges

1st ST (co RD G15) over US Highway 101

Fair

Monterey County, California · 05-MON-101-R39.77 · Structure no. 44 0178

Built
1968
57 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
192 ft
2 main spans
Daily traffic
5,500
2010 count
Owner
State
State Highway Agency

About this bridge

1st ST (co RD G15) over US Highway 101 is a concrete continuous box beam or girders - multiple carrying 1st ST (co RD G15) over US Highway 101 in Monterey County, California. It was built in 1968, so it is 57 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 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 5,500 vehicles a day, roughly 5% of them trucks, projected to reach 9,116 by 2041. The structure is 192 ft (58.6 m) long and 47 ft wide. If it were closed, the detour would be 51.6 mi (83 km).

Location

Open in Google Maps
Carries1st ST (co RD G15)
CrossesUS Highway 101
Location05-MON-101-R39.77
RouteCity Street 0
CountyMonterey County
StateCalifornia
Coordinates36.20106, -121.11241
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating52.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length192 ft (58.6 m)
Longest span96 ft (29.3 m)
Deck width47 ft (14.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2010)
Projected traffic9,116 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed51.6 mi (83 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 1st ST (co RD G15) over US Highway 101 built?

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

What condition is 1st ST (co RD G15) 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 October 2023.

How much traffic does 1st ST (co RD G15) over US Highway 101 carry?

About 5,500 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is 1st ST (co RD G15) over US Highway 101?

The structure is 192 ft (58.6 m) long with a longest span of 96 ft (29.3 m) and a deck 47 ft wide.

Who owns 1st ST (co RD G15) over US Highway 101?

It is owned by the State Highway Agency.