Structure 151920000000000 · Pottawatomie County, OK

Dam Rd. over Shawnee Lake Spillway

Carries Dam Rd. over Shawnee Lake Spillway, 2. N 2.9 W Bethel Acre.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT324 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

324 ft end to end, longest span 40 ft: about 5 semi-trucks nose to tail. 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.

Built196066 years old
Length324.1 ft98.8 m
Daily traffic175counted 2022
Last inspectedAugust 2024every 24 months

Location

StateOklahoma
CountyPottawatomie
Location2. N 2.9 W Bethel Acre
CarriesDam Rd.
CrossesShawnee Lake Spillway
Coordinates35.34974, -97.06946

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length324.1 ft (98.8 m)
Max Span40.0 ft (12.2 m)
Deck Width24.0 ft (7.3 m)
Deck Area721.2 sq m
Main Spans8
Year Built1960

Traffic

Avg Daily Traffic175 (2022)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number151920000000000

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.

Nearby Bridges