US Bridges

SB 8 over Yuma Canal

Fair

Yuma County, Arizona · 0.3 MI S JCT I-8 · Structure no. 00487

Built
1956
69 years old, rebuilt 1994
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
146 ft
3 main spans
Daily traffic
18,738
2024 count
Owner
State
State Highway Agency

About this bridge

SB 8 over Yuma Canal is a steel stringer/multi-beam or girder carrying SB 8 over Yuma Canal in Yuma County, Arizona. It was built in 1956 and reconstructed in 1994, so it is 69 years old, older than the Arizona average of 47.8 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 18,738 vehicles a day, roughly 9% of them trucks, projected to reach 18,748 by 2042. The structure is 146 ft (44.5 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSB 8
CrossesYuma Canal
Location0.3 MI S JCT I-8
RouteState Highway 8
CountyYuma County
StateArizona
Coordinates32.7273, -114.6245
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span70 ft (21.3 m)
Deck width88 ft (26.7 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,738 (2024)
Projected traffic18,748 by 2042
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 SB 8 over Yuma Canal built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1994.

What condition is SB 8 over Yuma Canal 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 October 2024.

How much traffic does SB 8 over Yuma Canal carry?

About 18,738 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is SB 8 over Yuma Canal?

The structure is 146 ft (44.5 m) long with a longest span of 70 ft (21.3 m) and a deck 88 ft wide.

Who owns SB 8 over Yuma Canal?

It is owned by the State Highway Agency.