Structure 140280143403007 · Caldwell County, TX

FM 1977 over San Marcos River

Carries FM 1977 over San Marcos River, 0.3 Mi NE Of FM 621.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT200 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

200 ft end to end, longest span 50 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 bridge of this kind.

Built201412 years old
Length200.1 ft61 m
Daily traffic474counted 2023
Last inspectedOctober 2024every 24 months

Location

StateTexas
CountyCaldwell
Location0.3 Mi NE Of FM 621
CarriesFM 1977
CrossesSan Marcos River
Coordinates29.78298, -97.83147

Physical Characteristics

MaterialPrestressed Concrete
DesignOther
Total Length200.1 ft (61 m)
Max Span49.9 ft (15.2 m)
Deck Width40.4 ft (12.3 m)
Deck Area750.3 sq m
Main Spans4
Year Built2014

Traffic

Avg Daily Traffic474 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number140280143403007

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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