Structure 142270015106093 · Travis County, TX

US 183 NB Ent Ramp over US 183 NB Exit Ramp

Carries US 183 NB Ent Ramp over US 183 NB Exit Ramp, 1.20 Mi NW Of IH 35.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT526 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

526 ft end to end, longest span 115 ft: about 7 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 segmental box-girder bridge.

Built199828 years old
Length525.9 ft160.3 m
Daily traffic12,330counted 2016
Last inspectedAugust 2023every 24 months

Location

StateTexas
CountyTravis
Location1.20 Mi NW Of IH 35
CarriesUS 183 NB Ent Ramp
CrossesUS 183 NB Exit Ramp
Coordinates30.35096, -97.71353

Physical Characteristics

MaterialPrestressed Concrete
DesignSegmental Box Girder
Total Length525.9 ft (160.3 m)
Max Span115.2 ft (35.1 m)
Deck Width27.9 ft (8.5 m)
Deck Area1362.5 sq m
Main Spans5
Year Built1998

Traffic

Avg Daily Traffic12,330 (2016)
Truck Traffic2%
Lanes On Bridge1
Lanes Under Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number142270015106093

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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