US Bridges

RM 1674 over North Llano River

Fair

Kimble County, Texas · 3.97 MI W of RM 2291 · Structure no. 071340014118046

Built
1950
75 years old
Condition
Fair
inspected May 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
1,012 ft
2 main spans
Daily traffic
334
2020 count
Owner
State
State Highway Agency

About this bridge

RM 1674 over North Llano River is a steel continuous girder and floorbeam system carrying RM 1674 over North Llano River in Kimble County, Texas. It was built in 1950, so it is 75 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.

It carries about 334 vehicles a day, roughly 19% of them trucks, projected to reach 490 by 2033. The structure is 1,012 ft (308.5 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesRM 1674
CrossesNorth Llano River
Location3.97 MI W of RM 2291
RouteState Highway 1674
CountyKimble County
StateTexas
Coordinates30.50502, -99.90265
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+10 approach)
Design loadOther
Structure length1,012 ft (308.5 m)
Longest span154 ft (46.9 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic334 (2020)
Projected traffic490 by 2033
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was RM 1674 over North Llano River built?

It was built in 1950, making it 75 years old in 2025.

What condition is RM 1674 over North Llano 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 May 2024.

How much traffic does RM 1674 over North Llano River carry?

About 334 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is RM 1674 over North Llano River?

The structure is 1,012 ft (308.5 m) long with a longest span of 154 ft (46.9 m) and a deck 29 ft wide.

Who owns RM 1674 over North Llano River?

It is owned by the State Highway Agency.