US Bridges

Administrative Acc over Oak Creek

Fair

Washington County, Utah · From South Entrance Go 0 · Structure no. 1590010S0000000

Built
1926
99 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
58 ft
3 main spans
Daily traffic
50
2013 count
Owner
Federal
National Park Service

About this bridge

Administrative Acc over Oak Creek is a concrete slab carrying Administrative Acc over Oak Creek in Washington County, Utah. It was built in 1926, so it is 99 years old, older than the Utah average of 40.1 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 50 vehicles a day, projected to reach 100 by 2033. The structure is 58 ft (17.7 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAdministrative Acc
CrossesOak Creek
LocationFrom South Entrance Go 0
RouteFederal Lands Road 403
StateUtah
Coordinates37.20846, -112.98122
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating20.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length58 ft (17.7 m)
Longest span22 ft (6.7 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2013)
Projected traffic100 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$45,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Administrative Acc over Oak Creek built?

It was built in 1926, making it 99 years old in 2025.

What condition is Administrative Acc over Oak 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 May 2023.

How much traffic does Administrative Acc over Oak Creek carry?

About 50 vehicles per day (2013 count).

How long is Administrative Acc over Oak Creek?

The structure is 58 ft (17.7 m) long with a longest span of 22 ft (6.7 m) and a deck 21 ft wide.

Who owns Administrative Acc over Oak Creek?

It is owned by the National Park Service.