US Bridges

N4650 (0116C) over Tyner Creek

Fair

Adair County, Oklahoma · 3E 4.3N of Proctor · Structure no. 225490000000000

Built
1990
35 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
51 ft
4 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4650 (0116C) over Tyner Creek is a concrete culvert carrying N4650 (0116C) over Tyner Creek in Adair County, Oklahoma. It was built in 1990, so it is 35 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 15% of them trucks, projected to reach 160 by 2042. The structure is 51 ft (15.5 m) long and 28 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesN4650 (0116C)
CrossesTyner Creek
Location3E 4.3N of Proctor
RouteCounty Highway N4650
CountyAdair County
StateOklahoma
Coordinates36.02816, -94.72484
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating46.8 US tons
Inventory rating36.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4650 (0116C) over Tyner Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is N4650 (0116C) over Tyner 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 2023.

How much traffic does N4650 (0116C) over Tyner Creek carry?

About 100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4650 (0116C) over Tyner Creek?

The structure is 51 ft (15.5 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns N4650 (0116C) over Tyner Creek?

It is owned by the County Highway Agency.