US Bridges

FM 584 over Lake Nasworthy

Fair

Tom Green County, Texas · 2.85 MI SW of Loop 306 · Structure no. 072260257401003

Built
1942
83 years old, rebuilt 1987
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,191 ft
3 main spans
Daily traffic
8,838
2023 count
Owner
State
State Highway Agency

About this bridge

FM 584 over Lake Nasworthy is a steel continuous stringer/multi-beam or girder carrying FM 584 over Lake Nasworthy in Tom Green County, Texas. It was built in 1942 and reconstructed in 1987, so it is 83 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 8,838 vehicles a day, roughly 4% of them trucks, projected to reach 9,240 by 2033. The structure is 1,191 ft (363 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM 584
CrossesLake Nasworthy
Location2.85 MI SW of Loop 306
RouteState Highway 584
CountyTom Green County
StateTexas
Coordinates31.38006, -100.49007
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+23 approach)
Design loadH 20
Structure length1,191 ft (363 m)
Longest span101 ft (30.8 m)
Deck width60 ft (18.3 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,838 (2023)
Projected traffic9,240 by 2033
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 FM 584 over Lake Nasworthy built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1987.

What condition is FM 584 over Lake Nasworthy 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 July 2024.

How much traffic does FM 584 over Lake Nasworthy carry?

About 8,838 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is FM 584 over Lake Nasworthy?

The structure is 1,191 ft (363 m) long with a longest span of 101 ft (30.8 m) and a deck 60 ft wide.

Who owns FM 584 over Lake Nasworthy?

It is owned by the State Highway Agency.