US Bridges

Boronda RD over Carmel River

Fair

Monterey County, California · 0.5 MI S Carmel Valley RD · Structure no. 44C0099

Built
1946
79 years old
Condition
Fair
inspected June 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
162 ft
4 main spans
Daily traffic
1,100
2017 count
Owner
County
County Highway Agency

About this bridge

Boronda RD over Carmel River is a steel continuous girder and floorbeam system carrying Boronda RD over Carmel River in Monterey County, California. It was built in 1946, so it is 79 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 1,100 vehicles a day, roughly 5% of them trucks, projected to reach 2,661 by 2046. The structure is 162 ft (49.4 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesBoronda RD
CrossesCarmel River
Location0.5 MI S Carmel Valley RD
RouteCounty Highway 0
Coordinates36.48976, -121.74896
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating23.3 US tons

Structure

MaterialSteel Continuous
DeckOpen grating
Main spans4
Design loadUnknown
Structure length162 ft (49.4 m)
Longest span46 ft (14 m)
Deck width13 ft (3.9 m)
Roadway width10 ft (2.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2017)
Projected traffic2,661 by 2046
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Boronda RD over Carmel River built?

It was built in 1946, making it 79 years old in 2025.

What condition is Boronda RD over Carmel 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 June 2024.

How much traffic does Boronda RD over Carmel River carry?

About 1,100 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Boronda RD over Carmel River?

The structure is 162 ft (49.4 m) long with a longest span of 46 ft (14 m) and a deck 13 ft wide.

Who owns Boronda RD over Carmel River?

It is owned by the County Highway Agency.