US Bridges

RM 864 over San Saba River

Fair

Menard County, Texas · 4.7 Miles SW of US 190 · Structure no. 071640129601007

Built
2011
14 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
85 ft
6 main spans
Daily traffic
300
2020 count
Owner
State
State Highway Agency

About this bridge

RM 864 over San Saba River is a concrete culvert carrying RM 864 over San Saba River in Menard County, Texas. It was built in 2011, so it is 14 years old, younger 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 300 vehicles a day, roughly 16% of them trucks, projected to reach 280 by 2033. The structure is 85 ft (25.9 m) long and 42 ft wide. If it were closed, the detour would be 51 mi (82 km).

Location

Open in Google Maps
CarriesRM 864
CrossesSan Saba River
Location4.7 Miles SW of US 190
RouteState Highway 864
CountyMenard County
StateTexas
Coordinates30.83462, -100.09393
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span10 ft (3 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2020)
Projected traffic280 by 2033
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed51 mi (82 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was RM 864 over San Saba River built?

It was built in 2011, making it 14 years old in 2025.

What condition is RM 864 over San Saba River 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 August 2024.

How much traffic does RM 864 over San Saba River carry?

About 300 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is RM 864 over San Saba River?

The structure is 85 ft (25.9 m) long with a longest span of 10 ft (3 m) and a deck 42 ft wide.

Who owns RM 864 over San Saba River?

It is owned by the State Highway Agency.