US Bridges

N3920 (lombard) over Creek

Fair

Osage County, Oklahoma · 2 Mi. N. of Skiatook · Structure no. 189340000000000

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
320
2022 count
Owner
County
County Highway Agency

About this bridge

N3920 (lombard) over Creek is a prestressed concrete tee beam carrying N3920 (lombard) over Creek in Osage County, Oklahoma. It was built in 1975, so it is 50 years old, older 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 320 vehicles a day, roughly 10% of them trucks, projected to reach 512 by 2042. The structure is 43 ft (13.1 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN3920 (lombard)
CrossesCreek
Location2 Mi. N. of Skiatook
RouteCounty Highway N3920
CountyOsage County
StateOklahoma
Coordinates36.39374, -96.01315
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.3 US tons
Inventory rating30.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2022)
Projected traffic512 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$323,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3920 (lombard) over Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is N3920 (lombard) over 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 February 2024.

How much traffic does N3920 (lombard) over Creek carry?

About 320 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3920 (lombard) over Creek?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 24 ft wide.

Who owns N3920 (lombard) over Creek?

It is owned by the County Highway Agency.