US Bridges

Mackey Ranch Road over South Fork Cow Bayou

FairPosted for load

McLennan County, Texas · 4.70 MI NW of FM 107 · Structure no. 091610AA0269002

Built
1973
52 years old
Condition
Fair
inspected March 2024
Type
Other
Prestressed Concrete
Length
120 ft
4 main spans
Daily traffic
312
2022 count
Owner
County
County Highway Agency

About this bridge

Mackey Ranch Road over South Fork Cow Bayou is a prestressed concrete other carrying Mackey Ranch Road over South Fork Cow Bayou in McLennan County, Texas. It was built in 1973, so it is 52 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 312 vehicles a day, projected to reach 300 by 2036. The structure is 120 ft (36.6 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMackey Ranch Road
CrossesSouth Fork Cow Bayou
Location4.70 MI NW of FM 107
RouteCounty Highway 128
StateTexas
Coordinates31.35762, -97.29436
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating40 US tons
Inventory rating24 US tons

Structure

Structure typeOther
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadUnknown
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic312 (2022)
Projected traffic300 by 2036
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$523,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mackey Ranch Road over South Fork Cow Bayou built?

It was built in 1973, making it 52 years old in 2025.

What condition is Mackey Ranch Road over South Fork Cow Bayou 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 March 2024.

How much traffic does Mackey Ranch Road over South Fork Cow Bayou carry?

About 312 vehicles per day (2022 count).

How long is Mackey Ranch Road over South Fork Cow Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Mackey Ranch Road over South Fork Cow Bayou?

It is owned by the County Highway Agency.