US Bridges

FH-3 Lake Mary RD over Willow Valley Creek

Fair

Coconino County, Arizona · 6.9 MI N SR 87 · Structure no. 09451

Built
1934
91 years old, rebuilt 1968
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
104 ft
3 main spans
Daily traffic
1,419
2024 count
Owner
County
County Highway Agency

About this bridge

FH-3 Lake Mary RD over Willow Valley Creek is a steel continuous stringer/multi-beam or girder carrying FH-3 Lake Mary RD over Willow Valley Creek in Coconino County, Arizona. It was built in 1934 and reconstructed in 1968, so it is 91 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 1,419 vehicles a day, roughly 2% of them trucks, projected to reach 1,429 by 2042. The structure is 104 ft (31.7 m) long and 34 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesFH-3 Lake Mary RD
CrossesWillow Valley Creek
Location6.9 MI N SR 87
RouteCounty Highway 0
CountyCoconino County
StateArizona
Coordinates34.6365, -111.3605
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating89.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length104 ft (31.7 m)
Longest span50 ft (15.2 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,419 (2024)
Projected traffic1,429 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FH-3 Lake Mary RD over Willow Valley Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1968.

What condition is FH-3 Lake Mary RD over Willow Valley 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 July 2024.

How much traffic does FH-3 Lake Mary RD over Willow Valley Creek carry?

About 1,419 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is FH-3 Lake Mary RD over Willow Valley Creek?

The structure is 104 ft (31.7 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.

Who owns FH-3 Lake Mary RD over Willow Valley Creek?

It is owned by the County Highway Agency.