US Bridges

N3260 over Willow Creek

PoorPosted for load

Noble County, Oklahoma · 4.1W 1.3S of Sumner · Structure no. 107540000000000

Built
1948
77 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

N3260 over Willow Creek is a steel stringer/multi-beam or girder carrying N3260 over Willow Creek in Noble 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 4 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. Its operating status is: posted for load restriction.

It carries about 75 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2042. The structure is 25 ft (7.6 m) long and 19 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN3260
CrossesWillow Creek
Location4.1W 1.3S of Sumner
RouteCounty Highway N3260
Coordinates36.29973, -97.19309
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26 US tons
Inventory rating16 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadH 10
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width19 ft (5.8 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic120 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$241,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3260 over Willow Creek built?

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

What condition is N3260 over Willow 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 August 2024.

How much traffic does N3260 over Willow Creek carry?

About 75 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3260 over Willow Creek?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 19 ft wide.

Who owns N3260 over Willow Creek?

It is owned by the County Highway Agency.