US Bridges

Melita Road over Santa Rosa Creek

Good

Sonoma County, California · 0.1 M S Los Alamos RD · Structure no. 20C0186

Built
1915
110 years old
Condition
Good
inspected August 2024
Type
Arch - Deck
Concrete
Length
87 ft
1 main span
Daily traffic
500
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Melita Road over Santa Rosa Creek is a concrete arch - deck carrying Melita Road over Santa Rosa Creek in Sonoma County, California. It was built in 1915, so it is 110 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 2% of them trucks, projected to reach 320 by 2042. The structure is 87 ft (26.5 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMelita Road
CrossesSanta Rosa Creek
Location0.1 M S Los Alamos RD
RouteCity Street 0
CountySonoma County
StateCalifornia
Coordinates38.4564, -122.6365
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length87 ft (26.5 m)
Longest span50 ft (15.2 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2005)
Projected traffic320 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Melita Road over Santa Rosa Creek built?

It was built in 1915, making it 110 years old in 2025.

What condition is Melita Road over Santa Rosa Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Melita Road over Santa Rosa Creek carry?

About 500 vehicles per day (2005 count), of which roughly 2% are trucks.

How long is Melita Road over Santa Rosa Creek?

The structure is 87 ft (26.5 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns Melita Road over Santa Rosa Creek?

It is owned by the City or Municipal Highway Agency.