US Bridges

FM 580 over N Settlement Branch

Fair

Coryell County, Texas · 6.45 MI SW of FM 116 · Structure no. 090500103202010

Built
1956
69 years old
Condition
Fair
inspected December 2022
Type
Culvert
Concrete
Length
40 ft
4 main spans
Daily traffic
545
2020 count
Owner
State
State Highway Agency

About this bridge

FM 580 over N Settlement Branch is a concrete culvert carrying FM 580 over N Settlement Branch in Coryell County, Texas. It was built in 1956, so it is 69 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 545 vehicles a day, roughly 13% of them trucks, projected to reach 1,230 by 2033. The structure is 40 ft (12.2 m) long and 37 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesFM 580
CrossesN Settlement Branch
Location6.45 MI SW of FM 116
RouteState Highway 580
CountyCoryell County
StateTexas
Coordinates31.216, -97.99367
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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length40 ft (12.2 m)
Longest span9 ft (2.7 m)
Deck width37 ft (11.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic545 (2020)
Projected traffic1,230 by 2033
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 580 over N Settlement Branch built?

It was built in 1956, making it 69 years old in 2025.

What condition is FM 580 over N Settlement Branch 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 December 2022.

How much traffic does FM 580 over N Settlement Branch carry?

About 545 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is FM 580 over N Settlement Branch?

The structure is 40 ft (12.2 m) long with a longest span of 9 ft (2.7 m) and a deck 37 ft wide.

Who owns FM 580 over N Settlement Branch?

It is owned by the State Highway Agency.