US Bridges

RM 2389 over Llano River Relief

FairPosted for load

Mason County, Texas · 4.50 MI SW of RM 1723 · Structure no. 141570268801003

Built
1930
95 years old, rebuilt 1962
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
183 ft
16 main spans
Daily traffic
317
2020 count
Owner
State
State Highway Agency

About this bridge

RM 2389 over Llano River Relief is a concrete culvert carrying RM 2389 over Llano River Relief in Mason County, Texas. It was built in 1930 and reconstructed in 1962, so it is 95 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 317 vehicles a day, roughly 3% of them trucks, projected to reach 300 by 2033. The structure is 183 ft (55.8 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesRM 2389
CrossesLlano River Relief
Location4.50 MI SW of RM 1723
RouteState Highway 2389
CountyMason County
StateTexas
Coordinates30.64826, -99.24923
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans16
Design loadUnknown
Structure length183 ft (55.8 m)
Longest span10 ft (3 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic317 (2020)
Projected traffic300 by 2033
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$11,000
NavigationNo navigation control on waterway

Frequently asked questions

When was RM 2389 over Llano River Relief built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1962.

What condition is RM 2389 over Llano River Relief 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 June 2023.

How much traffic does RM 2389 over Llano River Relief carry?

About 317 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is RM 2389 over Llano River Relief?

The structure is 183 ft (55.8 m) long with a longest span of 10 ft (3 m) and a deck 25 ft wide.

Who owns RM 2389 over Llano River Relief?

It is owned by the State Highway Agency.