Structure 170210031505080 · Brazos County, TX

SH 105 over Brazos River

Carries SH 105 over Brazos River, 0.58 Mi W Of FM 159.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,780 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,780 ft end to end, longest span 300 ft: about 4.9 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.

Built20215 years old
Length1779.9 ft542.5 m
Daily traffic7,050counted 2020
Last inspectedFebruary 2023every 24 months

Location

StateTexas
CountyBrazos
Location0.58 Mi W Of FM 159
CarriesSH 105
CrossesBrazos River
Coordinates30.35955, -96.15383

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1779.9 ft (542.5 m)
Max Span299.9 ft (91.4 m)
Deck Width45.9 ft (14 m)
Deck Area7,595 sq m
Main Spans3
Year Built2021

Traffic

Avg Daily Traffic7,050 (2020)
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number170210031505080

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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