Structure 2083 · Matanuska-Susitna County, AK

Parks Highway over Broad Pass Overhead

Carries Parks Highway over Broad Pass Overhead, Mile Point 159.0.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructure9/9 · Excellent
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT363 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9 · sets the ratingSuperstructure 9/9Substructure 8/9 · sets the rating

363 ft end to end, longest span 140 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 tee-beam bridge.

Built201610 years old
Length362.9 ft110.6 m
Daily traffic900counted 2020
Last inspectedJune 2024every 24 months

Location

StateAlaska
CountyMatanuska-Susitna
LocationMile Point 159.0
CarriesParks Highway
CrossesBroad Pass Overhead
Coordinates63.24886, -149.25106

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length362.9 ft (110.6 m)
Max Span140.1 ft (42.7 m)
Deck Width43.0 ft (13.1 m)
Deck Area1448.9 sq m
Main Spans3
Year Built2016

Traffic

Avg Daily Traffic900 (2020)
Truck Traffic37%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number2083

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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