US Bridges

Danley Road over Lurline Creek

Good

Colusa County, California · At Lurline RD · Structure no. 15C0059

Built
1974
51 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
152
2014 count
Owner
County
County Highway Agency

About this bridge

Danley Road over Lurline Creek is a concrete slab carrying Danley Road over Lurline Creek in Colusa County, California. It was built in 1974, so it is 51 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 152 vehicles a day, roughly 10% of them trucks, projected to reach 194 by 2046. The structure is 33 ft (10 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesDanley Road
CrossesLurline Creek
LocationAt Lurline RD
RouteCounty Highway 0
Coordinates39.21895, -122.24621
Functional classRural Minor 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.2 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length33 ft (10 m)
Longest span31 ft (9.6 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152 (2014)
Projected traffic194 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Danley Road over Lurline Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Danley Road over Lurline 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 October 2024.

How much traffic does Danley Road over Lurline Creek carry?

About 152 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Danley Road over Lurline Creek?

The structure is 33 ft (10 m) long with a longest span of 31 ft (9.6 m) and a deck 32 ft wide.

Who owns Danley Road over Lurline Creek?

It is owned by the County Highway Agency.