Structure 201460351009308 · Liberty County, TX

SH 99 over CR 622

Carries SH 99 over CR 622, 1.1 Mi NW FM 686.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT381 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

381 ft end to end, longest span 145 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 multi-beam bridge.

Built20197 years old
Length380.6 ft116 m
Daily traffic4,000counted 2022
Last inspectedJuly 2022every 48 months

Location

StateTexas
CountyLiberty
Location1.1 Mi NW FM 686
CarriesSH 99
CrossesCR 622
Coordinates30.08829, -95.01249

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length380.6 ft (116 m)
Max Span145.0 ft (44.2 m)
Deck Width45.9 ft (14 m)
Deck Area1,624 sq m
Main Spans3
Year Built2019

Traffic

Avg Daily Traffic4,000 (2022)
Truck Traffic10%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number201460351009308

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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