US Bridges

FM 711 over Big Iron Ore Creek

Fair

San Augustine County, Texas · 10.15 MI NW of US 96 · Structure no. 112030168001009

Built
1960
65 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
150 ft
6 main spans
Daily traffic
188
2020 count
Owner
State
State Highway Agency

About this bridge

FM 711 over Big Iron Ore Creek is a concrete slab carrying FM 711 over Big Iron Ore Creek in San Augustine County, Texas. It was built in 1960, so it is 65 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 188 vehicles a day, roughly 7% of them trucks, projected to reach 263 by 2040. The structure is 150 ft (45.7 m) long and 25 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesFM 711
CrossesBig Iron Ore Creek
Location10.15 MI NW of US 96
RouteState Highway 711
CountySan Augustine County
StateTexas
Coordinates31.62031, -94.24803
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length150 ft (45.7 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic188 (2020)
Projected traffic263 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$9,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 711 over Big Iron Ore Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is FM 711 over Big Iron Ore Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does FM 711 over Big Iron Ore Creek carry?

About 188 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is FM 711 over Big Iron Ore Creek?

The structure is 150 ft (45.7 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns FM 711 over Big Iron Ore Creek?

It is owned by the State Highway Agency.