US Bridges

FM 503 over Salt Creek

Good

McCulloch County, Texas · 2.55 MI N of US 87 · Structure no. 231600086902002

Built
1948
77 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
40 ft
2 main spans
Daily traffic
191
2020 count
Owner
State
State Highway Agency

About this bridge

FM 503 over Salt Creek is a concrete slab carrying FM 503 over Salt Creek in McCulloch County, Texas. It was built in 1948, so it is 77 years old, older 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 191 vehicles a day, roughly 14% of them trucks, projected to reach 189 by 2038. The structure is 40 ft (12.2 m) long and 23 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesFM 503
CrossesSalt Creek
Location2.55 MI N of US 87
RouteState Highway 503
CountyMcCulloch County
StateTexas
Coordinates31.25429, -99.59973
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length40 ft (12.2 m)
Longest span20 ft (6.1 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic191 (2020)
Projected traffic189 by 2038
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$21,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 503 over Salt Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is FM 503 over Salt Creek 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 April 2024.

How much traffic does FM 503 over Salt Creek carry?

About 191 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is FM 503 over Salt Creek?

The structure is 40 ft (12.2 m) long with a longest span of 20 ft (6.1 m) and a deck 23 ft wide.

Who owns FM 503 over Salt Creek?

It is owned by the State Highway Agency.