Structure 81770000603318 · Nolan County, TX

SH 70 / Bus 20 Con over IH 20 EB Ml & WB Ml

Carries SH 70 / Bus 20 Con over IH 20 EB Ml & WB Ml, 1.25 Mi W Of FM 1856.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT324 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

324 ft end to end, longest span 102 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.

Built198937 years old
Length324.1 ft98.8 m
Daily traffic5,120counted 2013
Last inspectedMarch 2023every 48 months

Location

StateTexas
CountyNolan
Location1.25 Mi W Of FM 1856
CarriesSH 70 / Bus 20 Con
CrossesIH 20 EB Ml & WB Ml
Coordinates32.48392, -100.35879

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length324.1 ft (98.8 m)
Max Span102.0 ft (31.1 m)
Deck Width27.6 ft (8.4 m)
Deck Area829.9 sq m
Main Spans2
Year Built1989

Traffic

Avg Daily Traffic5,120 (2013)
Truck Traffic7%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number081770000603318

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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