Structure GUN749-00.27A · Gunnison County, CO

Co RD 749 over East River

Carries Co RD 749 over East River, .2 Mi W Of SH 135.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT103 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 7/9

103 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a girder bridge.

Built199630 years old
Length103.3 ft31.5 m
Daily traffic17counted 2022
Last inspectedMay 2024every 24 months

Location

StateColorado
CountyGunnison
Location.2 Mi W Of SH 135
CarriesCo RD 749
CrossesEast River
Coordinates38.73245, -106.85664

Physical Characteristics

MaterialWood or Timber
DesignGirder and Floorbeam
Total Length103.3 ft (31.5 m)
Max Span97.4 ft (29.7 m)
Deck Width14.1 ft (4.3 m)
Deck Area135.4 sq m
Main Spans1
Year Built1996

Traffic

Avg Daily Traffic17 (2022)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberGUN749-00.27A

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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