Structure I-17-NC · El Paso County, CO

Sh21b / Powers over Research Parkway

Carries Sh21b / Powers over Research Parkway, 1.2 Mi N Of Woodmen.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT129 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

129 ft end to end. 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.

Built20224 years old
Length128.9 ft39.3 m
Daily traffic50,000counted 2022
Last inspectedJanuary 2024every 24 months

Location

StateColorado
CountyEl Paso
Location1.2 Mi N Of Woodmen
CarriesSh21b / Powers
CrossesResearch Parkway
Coordinates38.95639, -104.72717

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length128.9 ft (39.3 m)
Max Span121.1 ft (36.9 m)
Deck Width126.0 ft (38.4 m)
Deck Area1509.1 sq m
Main Spans1
Year Built2022

Traffic

Avg Daily Traffic50,000 (2022)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberI-17-NC

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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