US Bridges

State Route 180 over Cameron Slough (byrd Sl)

Good

Fresno County, California · 06-FRE-180-R76.99 · Structure no. 42 0073

Built
1977
48 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
158 ft
6 main spans
Daily traffic
8,850
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 180 over Cameron Slough (byrd Sl) is a concrete continuous slab carrying State Route 180 over Cameron Slough (byrd Sl) in Fresno County, California. It was built in 1977, so it is 48 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 8,850 vehicles a day, roughly 11% of them trucks, projected to reach 20,146 by 2045. The structure is 158 ft (48.2 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesState Route 180
CrossesCameron Slough (byrd Sl)
Location06-FRE-180-R76.99
RouteState Highway 180
CountyFresno County
StateCalifornia
Coordinates36.7257, -119.46071
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.3 US tons
Inventory rating57.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length158 ft (48.2 m)
Longest span26 ft (7.9 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,850 (2009)
Projected traffic20,146 by 2045
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 180 over Cameron Slough (byrd Sl) built?

It was built in 1977, making it 48 years old in 2025.

What condition is State Route 180 over Cameron Slough (byrd Sl) 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 2023.

How much traffic does State Route 180 over Cameron Slough (byrd Sl) carry?

About 8,850 vehicles per day (2009 count), of which roughly 11% are trucks.

How long is State Route 180 over Cameron Slough (byrd Sl)?

The structure is 158 ft (48.2 m) long with a longest span of 26 ft (7.9 m) and a deck 44 ft wide.

Who owns State Route 180 over Cameron Slough (byrd Sl)?

It is owned by the State Highway Agency.