US Bridges

FM 580 over N Settlement Branch

Fair

Coryell County, Texas · 5.75 MI SW of FM 116 · Structure no. 090500103202013

Built
1961
64 years old
Condition
Fair
inspected December 2022
Type
Culvert
Concrete
Length
22 ft
4 main spans
Daily traffic
1,150
2013 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 1961, so it is 64 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 1,150 vehicles a day, roughly 13% of them trucks, projected to reach 1,610 by 2033. The structure is 22 ft (6.7 m) long and 43 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesFM 580
CrossesN Settlement Branch
Location5.75 MI SW of FM 116
RouteState Highway 580
CountyCoryell County
StateTexas
Coordinates31.22026, -97.98305
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 protection7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be 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 loadHS 20
Structure length22 ft (6.7 m)
Longest span5 ft (1.5 m)
Deck width43 ft (13.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2013)
Projected traffic1,610 by 2033
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 1961, making it 64 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 1,150 vehicles per day (2013 count), of which roughly 13% are trucks.

How long is FM 580 over N Settlement Branch?

The structure is 22 ft (6.7 m) long with a longest span of 5 ft (1.5 m) and a deck 43 ft wide.

Who owns FM 580 over N Settlement Branch?

It is owned by the State Highway Agency.