US Bridges

FM 170 over Madera Creek

Fair

Presidio County, Texas · 37.0 MI SE of US 67 Bus · Structure no. 241890095709014

Built
1961
64 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
280 ft
7 main spans
Daily traffic
185
2020 count
Owner
State
State Highway Agency

About this bridge

FM 170 over Madera Creek is a concrete stringer/multi-beam or girder carrying FM 170 over Madera Creek in Presidio 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 185 vehicles a day, roughly 2% of them trucks, projected to reach 540 by 2033. The structure is 280 ft (85.3 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesFM 170
CrossesMadera Creek
Location37.0 MI SE of US 67 Bus
RouteState Highway 170
CountyPresidio County
StateTexas
Coordinates29.29578, -103.92006
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length280 ft (85.3 m)
Longest span40 ft (12.2 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic185 (2020)
Projected traffic540 by 2033
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$609,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 170 over Madera Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is FM 170 over Madera Creek 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 2023.

How much traffic does FM 170 over Madera Creek carry?

About 185 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is FM 170 over Madera Creek?

The structure is 280 ft (85.3 m) long with a longest span of 40 ft (12.2 m) and a deck 22 ft wide.

Who owns FM 170 over Madera Creek?

It is owned by the State Highway Agency.