US Bridges

Zavalla ST over Sims Byu

FairPosted for load

Harris County, Texas · 0.50 MI S of US 90 · Structure no. 121020B71721934

Built
1940
85 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
93 ft
3 main spans
Daily traffic
1,570
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Zavalla ST over Sims Byu is a concrete stringer/multi-beam or girder carrying Zavalla ST over Sims Byu in Harris County, Texas. It was built in 1940, so it is 85 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. Its operating status is: posted for load restriction.

It carries about 1,570 vehicles a day, projected to reach 447 by 2034. The structure is 93 ft (28.3 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesZavalla ST
CrossesSims Byu
Location0.50 MI S of US 90
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.62571, -95.50125
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
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 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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length93 ft (28.3 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,570 (2014)
Projected traffic447 by 2034
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Zavalla ST over Sims Byu built?

It was built in 1940, making it 85 years old in 2025.

What condition is Zavalla ST over Sims Byu 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 2023.

How much traffic does Zavalla ST over Sims Byu carry?

About 1,570 vehicles per day (2014 count).

How long is Zavalla ST over Sims Byu?

The structure is 93 ft (28.3 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns Zavalla ST over Sims Byu?

It is owned by the City or Municipal Highway Agency.