US Bridges

Sweetwater Blvd NB over Alcorn Bayou

Fair

Fort Bend County, Texas · 0.75 MI SE of US 59 · Structure no. 120800H00282004

Built
1986
39 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
232 ft
5 main spans
Daily traffic
8,230
2013 count
Owner
County
County Highway Agency

About this bridge

Sweetwater Blvd NB over Alcorn Bayou is a prestressed concrete box beam or girders - multiple carrying Sweetwater Blvd NB over Alcorn Bayou in Fort Bend County, Texas. It was built in 1986, so it is 39 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 8,230 vehicles a day, projected to reach 12,000 by 2033. The structure is 232 ft (70.7 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSweetwater Blvd NB
CrossesAlcorn Bayou
Location0.75 MI SE of US 59
RouteCounty Highway 0
CountyFort Bend County
StateTexas
Coordinates29.57844, -95.6304
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length232 ft (70.7 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,230 (2013)
Projected traffic12,000 by 2033
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sweetwater Blvd NB over Alcorn Bayou built?

It was built in 1986, making it 39 years old in 2025.

What condition is Sweetwater Blvd NB over Alcorn 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 September 2023.

How much traffic does Sweetwater Blvd NB over Alcorn Bayou carry?

About 8,230 vehicles per day (2013 count).

How long is Sweetwater Blvd NB over Alcorn Bayou?

The structure is 232 ft (70.7 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns Sweetwater Blvd NB over Alcorn Bayou?

It is owned by the County Highway Agency.