US Bridges

N4420 over Creek

Poor

Mayes County, Oklahoma · 0.4 N of Strang · Structure no. 108360000000000

Built
1948
77 years old
Condition
Poor
inspected April 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
600
2022 count
Owner
County
County Highway Agency

About this bridge

N4420 over Creek is a concrete culvert carrying N4420 over Creek in Mayes County, Oklahoma. It was built in 1948, so it is 77 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 600 vehicles a day, roughly 10% of them trucks, projected to reach 960 by 2042. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN4420
CrossesCreek
Location0.4 N of Strang
RouteCounty Highway N4420
CountyMayes County
StateOklahoma
Coordinates36.41554, -95.13093
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length30 ft (9.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2022)
Projected traffic960 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4420 over Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is N4420 over Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does N4420 over Creek carry?

About 600 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4420 over Creek?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3 m).

Who owns N4420 over Creek?

It is owned by the County Highway Agency.