US Bridges

N3050 over Red Rock

Fair

Garfield County, Oklahoma · 1E 8.7N US64/SH74 · Structure no. 304750000000000

Built
2012
13 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
2 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

N3050 over Red Rock is a steel stringer/multi-beam or girder carrying N3050 over Red Rock in Garfield County, Oklahoma. It was built in 2012, so it is 13 years old, younger 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 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2042. The structure is 100 ft (30.5 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN3050
CrossesRed Rock
Location1E 8.7N US64/SH74
RouteCounty Highway N3050
Coordinates36.52194, -97.56861
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating53 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span60 ft (18.3 m)
Deck width25 ft (7.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic38 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was N3050 over Red Rock built?

It was built in 2012, making it 13 years old in 2025.

What condition is N3050 over Red Rock 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 January 2023.

How much traffic does N3050 over Red Rock carry?

About 20 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3050 over Red Rock?

The structure is 100 ft (30.5 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.

Who owns N3050 over Red Rock?

It is owned by the County Highway Agency.