US Bridges

N3920 (n. Lombard) over Creek

FairPosted for load

Osage County, Oklahoma · 3N of Skiatook · Structure no. 196720000000000

Built
1980
45 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
320
2022 count
Owner
County
County Highway Agency

About this bridge

N3920 (n. Lombard) over Creek is a prestressed concrete tee beam carrying N3920 (n. Lombard) over Creek in Osage County, Oklahoma. It was built in 1980, so it is 45 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 320 vehicles a day, roughly 10% of them trucks, projected to reach 512 by 2042. The structure is 33 ft (10.1 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 (n. Lombard)
CrossesCreek
Location3N of Skiatook
RouteCounty Highway N3920
CountyOsage County
StateOklahoma
Coordinates36.40672, -96.01316
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 alignment7: Better than present minimum criteria
Operating rating46.8 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span31 ft (9.4 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$281,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3920 (n. Lombard) over Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is N3920 (n. 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 August 2024.

How much traffic does N3920 (n. Lombard) over Creek carry?

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

How long is N3920 (n. Lombard) over Creek?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.

Who owns N3920 (n. Lombard) over Creek?

It is owned by the County Highway Agency.