US Bridges

Williamson Vly RD over BNSF RR

Fair

Yavapai County, Arizona · 18.1 MI N JCT Iron Spr RD · Structure no. 09602

Built
1961
64 years old
Condition
Fair
inspected July 2023
Type
Frame
Concrete
Length
23 ft
1 main span
Daily traffic
372
2021 count
Owner
County
County Highway Agency

About this bridge

Williamson Vly RD over BNSF RR is a concrete frame carrying Williamson Vly RD over BNSF RR in Yavapai 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 372 vehicles a day, roughly 1% of them trucks, projected to reach 382 by 2041. The structure is 23 ft (7 m) long and 36 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesWilliamson Vly RD
CrossesBNSF RR
Location18.1 MI N JCT Iron Spr RD
RouteCounty Highway 0
CountyYavapai County
StateArizona
Coordinates34.7733, -112.6162
Functional classRural Major Collector

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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic372 (2021)
Projected traffic382 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed98.8 mi (159 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Williamson Vly RD over BNSF RR built?

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

What condition is Williamson Vly RD over BNSF RR 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 July 2023.

How much traffic does Williamson Vly RD over BNSF RR carry?

About 372 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Williamson Vly RD over BNSF RR?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 36 ft wide.

Who owns Williamson Vly RD over BNSF RR?

It is owned by the County Highway Agency.