Structure 181750016204089 · Navarro County, TX

SH 31 EB over Briar Creek

Carries SH 31 EB over Briar Creek, 8.60 Mi W Of IH 45.

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
CAR · 15 FT99 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

99 ft end to end, longest span 33 ft. Lengths and the car 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.

Built198937 years old
Length99.1 ft30.2 m
Daily traffic3,416counted 2023
Last inspectedDecember 2023every 24 months

Location

StateTexas
CountyNavarro
Location8.60 Mi W Of IH 45
CarriesSH 31 EB
CrossesBriar Creek
Coordinates32.03065, -96.56012

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length99.1 ft (30.2 m)
Max Span33.1 ft (10.1 m)
Deck Width40.0 ft (12.2 m)
Deck Area368.4 sq m
Main Spans3
Year Built1989

Traffic

Avg Daily Traffic3,416 (2023)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number181750016204089

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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