US Bridges

SH 166 over Medley Draw

Good

Jeff Davis County, Texas · 3.50 MI E of RM 505 · Structure no. 241230041503007

Built
1947
78 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
39 ft
3 main spans
Daily traffic
150
2020 count
Owner
State
State Highway Agency

About this bridge

SH 166 over Medley Draw is a concrete culvert carrying SH 166 over Medley Draw in Jeff Davis County, Texas. It was built in 1947, so it is 78 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 150 vehicles a day, roughly 19% of them trucks, projected to reach 50 by 2033. The structure is 39 ft (11.9 m) long and 47 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

CarriesSH 166
CrossesMedley Draw
Location3.50 MI E of RM 505
RouteState Highway 166
StateTexas
Coordinates30.52671, -104.22038
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length39 ft (11.9 m)
Longest span10 ft (3 m)
Deck width47 ft (14.2 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic50 by 2033
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 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 166 over Medley Draw built?

It was built in 1947, making it 78 years old in 2025.

What condition is SH 166 over Medley Draw 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 March 2023.

How much traffic does SH 166 over Medley Draw carry?

About 150 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is SH 166 over Medley Draw?

The structure is 39 ft (11.9 m) long with a longest span of 10 ft (3 m) and a deck 47 ft wide.

Who owns SH 166 over Medley Draw?

It is owned by the State Highway Agency.