US Bridges

Dan Mc Namara Road over Owens Creek

Fair

Merced County, California · 0.2 MI S Green House RD · Structure no. 39C0150

Built
1930
95 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
53 ft
3 main spans
Daily traffic
297
1990 count
Owner
County
County Highway Agency

About this bridge

Dan Mc Namara Road over Owens Creek is a wood or timber stringer/multi-beam or girder carrying Dan Mc Namara Road over Owens Creek in Merced County, California. It was built in 1930, so it is 95 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 297 vehicles a day, roughly 15% of them trucks, projected to reach 678 by 2042. The structure is 53 ft (16.2 m) long and 26 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesDan Mc Namara Road
CrossesOwens Creek
Location0.2 MI S Green House RD
RouteCounty Highway 0
Coordinates37.22723, -120.67042
Functional classRural Minor 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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating33.2 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span18 ft (5.4 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic297 (1990)
Projected traffic678 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 Dan Mc Namara Road over Owens Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Dan Mc Namara Road over Owens Creek 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 November 2024.

How much traffic does Dan Mc Namara Road over Owens Creek carry?

About 297 vehicles per day (1990 count), of which roughly 15% are trucks.

How long is Dan Mc Namara Road over Owens Creek?

The structure is 53 ft (16.2 m) long with a longest span of 18 ft (5.4 m) and a deck 26 ft wide.

Who owns Dan Mc Namara Road over Owens Creek?

It is owned by the County Highway Agency.