US Bridges

SH 18 over Diamond Y Draw Relief

Fair

Pecos County, Texas · 9.30 MI N of IH 10 · Structure no. 061860029206024

Built
1981
44 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
61 ft
8 main spans
Daily traffic
1,877
2020 count
Owner
State
State Highway Agency

About this bridge

SH 18 over Diamond Y Draw Relief is a concrete culvert carrying SH 18 over Diamond Y Draw Relief in Pecos County, Texas. It was built in 1981, so it is 44 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 1,877 vehicles a day, roughly 34% of them trucks, projected to reach 2,380 by 2033. The structure is 61 ft (18.6 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH 18
CrossesDiamond Y Draw Relief
Location9.30 MI N of IH 10
RouteState Highway 18
CountyPecos County
StateTexas
Coordinates31.04226, -102.88719
Functional classRural Minor Arterial

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span7 ft (2.1 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,877 (2020)
Projected traffic2,380 by 2033
Trucks34%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 18 over Diamond Y Draw Relief built?

It was built in 1981, making it 44 years old in 2025.

What condition is SH 18 over Diamond Y Draw Relief 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 September 2024.

How much traffic does SH 18 over Diamond Y Draw Relief carry?

About 1,877 vehicles per day (2020 count), of which roughly 34% are trucks.

How long is SH 18 over Diamond Y Draw Relief?

The structure is 61 ft (18.6 m) long with a longest span of 7 ft (2.1 m) and a deck 46 ft wide.

Who owns SH 18 over Diamond Y Draw Relief?

It is owned by the State Highway Agency.