Structure 142270313601034 · Travis County, TX

Lp 1 SB To 5th ST over Johnson Crk /6th ST /rmp

Carries Lp 1 SB To 5th ST over Johnson Crk /6th ST /rmp, Lady Bird Lake Intchng.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT511 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

511 ft end to end, longest span 83 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 multi-beam bridge.

Built197551 years old
Length511.2 ft155.8 m
Daily traffic14,120counted 2016
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyTravis
LocationLady Bird Lake Intchng
CarriesLp 1 SB To 5th ST
CrossesJohnson Crk /6th ST /rmp
Coordinates30.27644, -97.76809

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length511.2 ft (155.8 m)
Max Span83.0 ft (25.3 m)
Deck Width31.8 ft (9.7 m)
Deck Area1511.3 sq m
Main Spans6
Year Built1975

Traffic

Avg Daily Traffic14,120 (2016)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number142270313601034

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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