Structure 201460059301016 · Liberty County, TX

SH 105 over Marsh Branch

Carries SH 105 over Marsh Branch, 5.4 Mi SE Of US 59.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT201 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

201 ft end to end, longest span 40 ft: about 3 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.

Built197254 years old
Length201.4 ft61.4 m
Daily traffic12,199counted 2024
Last inspectedMarch 2024every 24 months

Location

StateTexas
CountyLiberty
Location5.4 Mi SE Of US 59
CarriesSH 105
CrossesMarsh Branch
Coordinates30.32129, -95.00859

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length201.4 ft (61.4 m)
Max Span40.0 ft (12.2 m)
Deck Width46.3 ft (14.1 m)
Deck Area865.7 sq m
Main Spans5
Year Built1972

Traffic

Avg Daily Traffic12,199 (2024)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number201460059301016

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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