Structure 21270036503012 · Johnson County, TX

SH 171 over Martin Creek

Carries SH 171 over Martin Creek, 4.5 Mi E Of FM 2331 South.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT131 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

131 ft end to end, longest span 26 ft. 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 slab bridge.

Built1957rebuilt 1988
Length130.9 ft39.9 m
Daily traffic8,285counted 2022
Last inspectedOctober 2024every 24 months

Location

StateTexas
CountyJohnson
Location4.5 Mi E Of FM 2331 South
CarriesSH 171
CrossesMartin Creek
Coordinates32.41582, -97.45460

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length130.9 ft (39.9 m)
Max Span25.9 ft (7.9 m)
Deck Width45.9 ft (14 m)
Deck Area558.6 sq m
Main Spans5
Year Built1957 (reconstructed 1988)

Traffic

Avg Daily Traffic8,285 (2022)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number021270036503012

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.

Nearby Bridges