US Bridges

US 93 NB over Sycamore Creek

Fair

Mohave County, Arizona · 36.4 MI S JCT I-40 · Structure no. 00640

Built
1961
64 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
172 ft
6 main spans
Daily traffic
4,724
2022 count
Owner
State
State Highway Agency

About this bridge

US 93 NB over Sycamore Creek is a concrete continuous slab carrying US 93 NB over Sycamore Creek in Mohave County, Arizona. It was built in 1961, so it is 64 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 6 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 4,724 vehicles a day, roughly 37% of them trucks, projected to reach 4,734 by 2042. The structure is 172 ft (52.4 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 93 NB
CrossesSycamore Creek
Location36.4 MI S JCT I-40
RouteU.S. Route 93
CountyMohave County
StateArizona
Coordinates34.6556, -113.575
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,724 (2022)
Projected traffic4,734 by 2042
Trucks37%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 NB over Sycamore Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is US 93 NB over Sycamore Creek 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 December 2024.

How much traffic does US 93 NB over Sycamore Creek carry?

About 4,724 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is US 93 NB over Sycamore Creek?

The structure is 172 ft (52.4 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns US 93 NB over Sycamore Creek?

It is owned by the State Highway Agency.