Structure 22200036401697 · Tarrant County, TX

SH 121 SB On Ramp over Big Bear Ck/stone Myers

Carries SH 121 SB On Ramp over Big Bear Ck/stone Myers, 0.6 Mi N Of Hall-johnson.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT645 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

645 ft end to end, longest span 126 ft: about 1.8 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.

Built201511 years old
Length645.0 ft196.6 m
Daily traffic5,700counted 2015
Last inspectedMay 2024every 24 months

Location

StateTexas
CountyTarrant
Location0.6 Mi N Of Hall-johnson
CarriesSH 121 SB On Ramp
CrossesBig Bear Ck/stone Myers
Coordinates32.90373, -97.09943

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length645.0 ft (196.6 m)
Max Span126.0 ft (38.4 m)
Deck Width27.9 ft (8.5 m)
Deck Area1671.1 sq m
Main Spans4
Year Built2015

Traffic

Avg Daily Traffic5,700 (2015)
Lanes On Bridge1
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number022200036401697

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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