US Bridges

41-64C (N3470) over Deep Fork Trib.

Fair

Lincoln County, Oklahoma · 1.8 N. of Sparks · Structure no. 282580000000000

Built
2006
19 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
156 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

41-64C (N3470) over Deep Fork Trib. is a prestressed concrete tee beam carrying 41-64C (N3470) over Deep Fork Trib. in Lincoln County, Oklahoma. It was built in 2006, so it is 19 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 156 ft (47.4 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
Carries41-64C (N3470)
CrossesDeep Fork Trib.
Location1.8 N. of Sparks
RouteCounty Highway 4164C
CountyLincoln County
StateOklahoma
Coordinates35.63683, -96.82219
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.4 m)
Longest span55 ft (16.8 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$852,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 41-64C (N3470) over Deep Fork Trib. built?

It was built in 2006, making it 19 years old in 2025.

What condition is 41-64C (N3470) over Deep Fork Trib. 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 41-64C (N3470) over Deep Fork Trib. carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is 41-64C (N3470) over Deep Fork Trib.?

The structure is 156 ft (47.4 m) long with a longest span of 55 ft (16.8 m) and a deck 28 ft wide.

Who owns 41-64C (N3470) over Deep Fork Trib.?

It is owned by the County Highway Agency.