FM 81 over San Antonio River

Fair Condition77 years old433 vehicles/day

Location

StateTexas
CountyKarnes
Location0.6 Mi E Of US 181
CarriesFM 81
CrossesSan Antonio River
Coordinates28.95485, -97.97738

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway5 (Fair)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length471.1 ft (143.6 m)
Max Span89.9 ft (27.4 m)
Deck Width25.6 ft (7.8 m)
Deck Area1120.1 sq m
Main Spans3
Year Built1949

Traffic

Avg Daily Traffic433 (2024)
Truck Traffic61%
Lanes On Bridge2

Inspection & Ownership

Last Inspection624
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Structure Number161290112301001

Nearby Bridges

US 181 over Cow Creek 1.3 mi Fair FM 81 over Draw 1.3 mi Good FM 81 over Draw 1.5 mi Good CR 222 over Creek 1.8 mi Good US 181 over San Antonio River 2.5 mi Fair CR 230 over Draw 2.6 mi Poor US 181 over Cow Creek Draw 2.7 mi Fair CR 237 over Draw 2.8 mi Fair FM 81 over Cow Creek 2.9 mi Good US 181 over Cow Creek Draw 3.0 mi Fair