US Bridges

State Route 1 over Little Sur River

Fair

Monterey County, California · 05-MON-001-56.10 · Structure no. 44 0020

Built
1953
72 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
265 ft
6 main spans
Daily traffic
4,300
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Little Sur River is a concrete continuous tee beam carrying State Route 1 over Little Sur River in Monterey County, California. It was built in 1953, so it is 72 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 4,300 vehicles a day, projected to reach 3,146 by 2045. The structure is 265 ft (80.8 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesState Route 1
CrossesLittle Sur River
Location05-MON-001-56.10
RouteState Highway 1
Coordinates36.3322, -121.88552
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length265 ft (80.8 m)
Longest span65 ft (19.8 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2009)
Projected traffic3,146 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 1 over Little Sur River built?

It was built in 1953, making it 72 years old in 2025.

What condition is State Route 1 over Little Sur River 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 July 2023.

How much traffic does State Route 1 over Little Sur River carry?

About 4,300 vehicles per day (2009 count).

How long is State Route 1 over Little Sur River?

The structure is 265 ft (80.8 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.

Who owns State Route 1 over Little Sur River?

It is owned by the State Highway Agency.