US Bridges

E0350 over Grayhorse Creek

Fair

Osage County, Oklahoma · 4 Mi. S.E. of Fairfax · Structure no. 016070000000000

Built
1925
100 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Concrete
Length
104 ft
2 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

E0350 over Grayhorse Creek is a concrete arch - deck carrying E0350 over Grayhorse Creek in Osage County, Oklahoma. It was built in 1925, so it is 100 years old, older than the Oklahoma 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 104 ft (31.7 m) long and 20 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesE0350
CrossesGrayhorse Creek
Location4 Mi. S.E. of Fairfax
RouteCounty Highway E0350
CountyOsage County
StateOklahoma
Coordinates36.50708, -96.68828
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span50 ft (15.2 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic80 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$514,000
NavigationNo navigation control on waterway

Frequently asked questions

When was E0350 over Grayhorse Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is E0350 over Grayhorse 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 March 2024.

How much traffic does E0350 over Grayhorse Creek carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is E0350 over Grayhorse Creek?

The structure is 104 ft (31.7 m) long with a longest span of 50 ft (15.2 m) and a deck 20 ft wide.

Who owns E0350 over Grayhorse Creek?

It is owned by the County Highway Agency.