US Bridges

FM 170 over Comanche Creek

Fair

Brewster County, Texas · 4.9 MI NE of Presidio C/L · Structure no. 240220095710027

Built
2005
20 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
64 ft
6 main spans
Daily traffic
258
2020 count
Owner
State
State Highway Agency

About this bridge

FM 170 over Comanche Creek is a concrete culvert carrying FM 170 over Comanche Creek in Brewster County, Texas. It was built in 2005, so it is 20 years old, younger 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 258 vehicles a day, roughly 9% of them trucks, projected to reach 270 by 2033. The structure is 64 ft (19.6 m) long and 69 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesFM 170
CrossesComanche Creek
Location4.9 MI NE of Presidio C/L
RouteState Highway 170
CountyBrewster County
StateTexas
Coordinates29.27982, -103.71732
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadHS 20
Structure length64 ft (19.6 m)
Longest span10 ft (3 m)
Deck width69 ft (21 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic258 (2020)
Projected traffic270 by 2033
Trucks9%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 170 over Comanche Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is FM 170 over Comanche 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 April 2024.

How much traffic does FM 170 over Comanche Creek carry?

About 258 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is FM 170 over Comanche Creek?

The structure is 64 ft (19.6 m) long with a longest span of 10 ft (3 m) and a deck 69 ft wide.

Who owns FM 170 over Comanche Creek?

It is owned by the State Highway Agency.