US Bridges

CR 4620 over Post Oak Creek

FairPosted for load

Delta County, Texas · 0.4 MI E of SH 19 · Structure no. 010600AA0215001

Built
1921
104 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
2 main spans
Daily traffic
40
2010 count
Owner
County
County Highway Agency

About this bridge

CR 4620 over Post Oak Creek is a steel stringer/multi-beam or girder carrying CR 4620 over Post Oak Creek in Delta County, Texas. It was built in 1921, so it is 104 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 40 vehicles a day, projected to reach 30 by 2030. The structure is 36 ft (11.1 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCR 4620
CrossesPost Oak Creek
Location0.4 MI E of SH 19
RouteCounty Highway 4620
CountyDelta County
StateTexas
Coordinates33.42725, -95.59562
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length36 ft (11.1 m)
Longest span18 ft (5.5 m)
Deck width17 ft (5.2 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2010)
Projected traffic30 by 2030
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$214,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 4620 over Post Oak Creek built?

It was built in 1921, making it 104 years old in 2025.

What condition is CR 4620 over Post Oak 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 October 2023.

How much traffic does CR 4620 over Post Oak Creek carry?

About 40 vehicles per day (2010 count).

How long is CR 4620 over Post Oak Creek?

The structure is 36 ft (11.1 m) long with a longest span of 18 ft (5.5 m) and a deck 17 ft wide.

Who owns CR 4620 over Post Oak Creek?

It is owned by the County Highway Agency.