Structure 201240006507120 · Jefferson County, TX

US 69 NB over Chinn LN

Carries US 69 NB over Chinn LN, 5.1 Mi N Of IH 10.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT457 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

457 ft end to end: about 6 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.

Built1978rebuilt 2020
Length457.0 ft139.3 m
Daily traffic20,780counted 2020
Last inspectedMay 2022every 48 months

Location

StateTexas
CountyJefferson
Location5.1 Mi N Of IH 10
CarriesUS 69 NB
CrossesChinn LN
Coordinates30.15295, -94.18046

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length457.0 ft (139.3 m)
Max Span95.1 ft (29 m)
Deck Width64.0 ft (19.5 m)
Deck Area2716.3 sq m
Main Spans1
Year Built1978 (reconstructed 2020)

Traffic

Avg Daily Traffic20,780 (2020)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number201240006507120

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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