Structure 298380000000000 · Tulsa County, OK

N4050 (161st E.) over Creek

Carries N4050 (161st E.) over Creek, .5s Of 186th St. N.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT47 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 47 ft across with 3 openings. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built201115 years old
Length47.2 ft14.4 m
Daily traffic1,134counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateOklahoma
CountyTulsa
Location.5s Of 186th St. N
CarriesN4050 (161st E.)
CrossesCreek
Coordinates36.41722, -95.79444

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length47.2 ft (14.4 m)
Max Span13.1 ft (4 m)
Deck Width36.1 ft (11 m)
Deck Area158.4 sq m
Main Spans3
Year Built2011

Traffic

Avg Daily Traffic1,134 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number298380000000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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