US Bridges

S Ely RD over Adobe Creek

Good

Sonoma County, California · 0.1 MI SE Casa Grande Ave · Structure no. 20C0482

Built
1984
41 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
50 ft
2 main spans
Daily traffic
6,145
2013 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Ely RD over Adobe Creek is a concrete continuous slab carrying S Ely RD over Adobe Creek in Sonoma County, California. It was built in 1984, so it is 41 years old, younger 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 6,145 vehicles a day, roughly 3% of them trucks, projected to reach 17,042 by 2045. The structure is 50 ft (15.2 m) long and 70 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS Ely RD
CrossesAdobe Creek
Location0.1 MI SE Casa Grande Ave
RouteCity Street 0
Coordinates38.24283, -122.59446
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span25 ft (7.6 m)
Deck width70 ft (21.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,145 (2013)
Projected traffic17,042 by 2045
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 S Ely RD over Adobe Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is S Ely RD over Adobe 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 June 2023.

How much traffic does S Ely RD over Adobe Creek carry?

About 6,145 vehicles per day (2013 count), of which roughly 3% are trucks.

How long is S Ely RD over Adobe Creek?

The structure is 50 ft (15.2 m) long with a longest span of 25 ft (7.6 m) and a deck 70 ft wide.

Who owns S Ely RD over Adobe Creek?

It is owned by the City or Municipal Highway Agency.