Structure 221590030001025 · Maverick County, TX

Sl 480 over US 277

Carries Sl 480 over US 277, At Jct US 277 & Sl 480.

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 FT1,430 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,430 ft end to end, longest span 116 ft: about 4.0 football fields. 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.

Built201016 years old
Length1430.1 ft435.9 m
Daily traffic3,610counted 2013
Last inspectedOctober 2023every 48 months

Location

StateTexas
CountyMaverick
LocationAt Jct US 277 & Sl 480
CarriesSl 480
CrossesUS 277
Coordinates28.70583, -100.43183

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1430.1 ft (435.9 m)
Max Span116.1 ft (35.4 m)
Deck Width45.9 ft (14 m)
Deck Area6102.6 sq m
Main Spans13
Year Built2010

Traffic

Avg Daily Traffic3,610 (2013)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number221590030001025

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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