US Bridges

RM 2900 over Llano R / Lake Lbj

Good

Llano County, Texas · 1.0 MI S of RM 1431 · Structure no. 141500310101003

Built
2019
6 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,200 ft
15 main spans
Daily traffic
6,197
2016 count
Owner
State
State Highway Agency

About this bridge

RM 2900 over Llano R / Lake Lbj is a prestressed concrete stringer/multi-beam or girder carrying RM 2900 over Llano R / Lake Lbj in Llano County, Texas. It was built in 2019, so it is 6 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,197 vehicles a day, roughly 5% of them trucks, projected to reach 10,780 by 2036. The structure is 1,200 ft (365.8 m) long and 45 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesRM 2900
CrossesLlano R / Lake Lbj
Location1.0 MI S of RM 1431
RouteState Highway 2900
CountyLlano County
StateTexas
Coordinates30.64429, -98.44696
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans15
Design loadHL 93
Structure length1,200 ft (365.8 m)
Longest span95 ft (29 m)
Deck width45 ft (13.7 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,197 (2016)
Projected traffic10,780 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed16.2 mi (26 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 2900 over Llano R / Lake Lbj built?

It was built in 2019, making it 6 years old in 2025.

What condition is RM 2900 over Llano R / Lake Lbj in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does RM 2900 over Llano R / Lake Lbj carry?

About 6,197 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is RM 2900 over Llano R / Lake Lbj?

The structure is 1,200 ft (365.8 m) long with a longest span of 95 ft (29 m) and a deck 45 ft wide.

Who owns RM 2900 over Llano R / Lake Lbj?

It is owned by the State Highway Agency.