US Bridges

CR 406 - Pct 4 over Rock Tank Creek

Fair

Johnson County, Texas · 1.3 MI N of FM 4 · Structure no. 021270AA0687001

Built
2003
22 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
91 ft
3 main spans
Daily traffic
189
2024 count
Owner
County
County Highway Agency

About this bridge

CR 406 - Pct 4 over Rock Tank Creek is a steel stringer/multi-beam or girder carrying CR 406 - Pct 4 over Rock Tank Creek in Johnson County, Texas. It was built in 2003, so it is 22 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 189 vehicles a day, roughly 3% of them trucks, projected to reach 224 by 2041. The structure is 91 ft (27.7 m) long and 20 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCR 406 - Pct 4
CrossesRock Tank Creek
Location1.3 MI N of FM 4
RouteCounty Highway 406
CountyJohnson County
StateTexas
Coordinates32.30883, -97.22488
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length91 ft (27.7 m)
Longest span36 ft (11 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic189 (2024)
Projected traffic224 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 406 - Pct 4 over Rock Tank Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is CR 406 - Pct 4 over Rock Tank 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 November 2024.

How much traffic does CR 406 - Pct 4 over Rock Tank Creek carry?

About 189 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is CR 406 - Pct 4 over Rock Tank Creek?

The structure is 91 ft (27.7 m) long with a longest span of 36 ft (11 m) and a deck 20 ft wide.

Who owns CR 406 - Pct 4 over Rock Tank Creek?

It is owned by the County Highway Agency.