Structure 285110000000000 · Tulsa County, OK

7214c(56th.st.n) over Bird Creek

Carries 7214c(56th.st.n) over Bird Creek, 56th St. N .7mi E HWY 169.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT727 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

727 ft end to end, longest span 100 ft: about 2.0 football fields. Lengths and the semi-truck 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built201115 years old
Length726.7 ft221.5 m
Daily traffic510counted 2024
Last inspectedSeptember 2023every 24 months

Location

StateOklahoma
CountyTulsa
Location56th St. N .7mi E HWY 169
Carries7214c(56th.st.n)
CrossesBird Creek
Coordinates36.23500, -95.83444

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length726.7 ft (221.5 m)
Max Span100.1 ft (30.5 m)
Deck Width42.3 ft (12.9 m)
Deck Area2857.3 sq m
Main Spans9
Year Built2011

Traffic

Avg Daily Traffic510 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number285110000000000

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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