US Bridges

N4270 over Chouteau Creek

Poor

Mayes County, Oklahoma · 5.5NW of 412 and 69 · Structure no. 102620000000000

Built
1945
80 years old
Condition
Poor
inspected September 2024
Type
Culvert
Concrete
Length
47 ft
6 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4270 over Chouteau Creek is a concrete culvert carrying N4270 over Chouteau Creek in Mayes County, Oklahoma. It was built in 1945, so it is 80 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 2 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 47 ft (14.3 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN4270
CrossesChouteau Creek
Location5.5NW of 412 and 69
RouteCounty Highway N4220
CountyMayes County
StateOklahoma
Coordinates36.22254, -95.40466
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Last inspectionSeptember 2024
Inspection intervalevery 6 months
Operating statusOpen, no restriction
ScourScour critical; extensive scour has occurred
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length47 ft (14.3 m)
Longest span5 ft (1.5 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 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 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 N4270 over Chouteau Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is N4270 over Chouteau 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 September 2024.

How much traffic does N4270 over Chouteau Creek carry?

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

How long is N4270 over Chouteau Creek?

The structure is 47 ft (14.3 m) long with a longest span of 5 ft (1.5 m) and a deck 25 ft wide.

Who owns N4270 over Chouteau Creek?

It is owned by the County Highway Agency.