US Bridges

Ella Blvd NB over White Oak Bayou

Fair

Harris County, Texas · 0.10 MI N of W 18th · Structure no. 121020B22017038

Built
1958
67 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
203 ft
3 main spans
Daily traffic
10,000
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ella Blvd NB over White Oak Bayou is a steel continuous stringer/multi-beam or girder carrying Ella Blvd NB over White Oak Bayou in Harris County, Texas. It was built in 1958, so it is 67 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 10,000 vehicles a day, roughly 3% of them trucks, projected to reach 10,000 by 2031. The structure is 203 ft (61.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesElla Blvd NB
CrossesWhite Oak Bayou
Location0.10 MI N of W 18th
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.80322, -95.42963
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length203 ft (61.9 m)
Longest span80 ft (24.4 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2011)
Projected traffic10,000 by 2031
Trucks3%
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

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$13,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ella Blvd NB over White Oak Bayou built?

It was built in 1958, making it 67 years old in 2025.

What condition is Ella Blvd NB over White Oak 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 November 2023.

How much traffic does Ella Blvd NB over White Oak Bayou carry?

About 10,000 vehicles per day (2011 count), of which roughly 3% are trucks.

How long is Ella Blvd NB over White Oak Bayou?

The structure is 203 ft (61.9 m) long with a longest span of 80 ft (24.4 m) and a deck 29 ft wide.

Who owns Ella Blvd NB over White Oak Bayou?

It is owned by the City or Municipal Highway Agency.