US Bridges

FM 2004 over Bastrop Bayou

Fair

Brazoria County, Texas · 0.50 MI SW of FM 523 · Structure no. 120200252302003

Built
1965
60 years old, rebuilt 1995
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
420 ft
7 main spans
Daily traffic
10,105
2020 count
Owner
State
State Highway Agency

About this bridge

FM 2004 over Bastrop Bayou is a prestressed concrete stringer/multi-beam or girder carrying FM 2004 over Bastrop Bayou in Brazoria County, Texas. It was built in 1965 and reconstructed in 1995, so it is 60 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 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 10,105 vehicles a day, roughly 4% of them trucks, projected to reach 9,360 by 2033. The structure is 420 ft (128 m) long and 46 ft wide.

CarriesFM 2004
CrossesBastrop Bayou
Location0.50 MI SW of FM 523
RouteState Highway 2004
StateTexas
Coordinates29.11318, -95.38425
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length420 ft (128 m)
Longest span60 ft (18.3 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,105 (2020)
Projected traffic9,360 by 2033
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 FM 2004 over Bastrop Bayou built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1995.

What condition is FM 2004 over Bastrop 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 December 2024.

How much traffic does FM 2004 over Bastrop Bayou carry?

About 10,105 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is FM 2004 over Bastrop Bayou?

The structure is 420 ft (128 m) long with a longest span of 60 ft (18.3 m) and a deck 46 ft wide.

Who owns FM 2004 over Bastrop Bayou?

It is owned by the State Highway Agency.