US Bridges

IH 69 SB On-Rp N over IH 69 SB Off-Rp L

Fair

Harris County, Texas · 0.15 MI SW of IH 45 · Structure no. 121020002713114

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
303 ft
1 main span
Daily traffic
14,453
2018 count
Owner
State
State Highway Agency

About this bridge

IH 69 SB On-Rp N over IH 69 SB Off-Rp L is a steel stringer/multi-beam or girder carrying IH 69 SB On-Rp N over IH 69 SB Off-Rp L in Harris County, Texas. It was built in 1975, so it is 50 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 14,453 vehicles a day, roughly 9% of them trucks, projected to reach 21,680 by 2033. The structure is 303 ft (92.4 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIH 69 SB On-Rp N
CrossesIH 69 SB Off-Rp L
Location0.15 MI SW of IH 45
RouteU.S. Route 59
CountyHarris County
StateTexas
Coordinates29.74282, -95.36455
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHS 20
Structure length303 ft (92.4 m)
Longest span58 ft (17.7 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,453 (2018)
Projected traffic21,680 by 2033
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$23,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 69 SB On-Rp N over IH 69 SB Off-Rp L built?

It was built in 1975, making it 50 years old in 2025.

What condition is IH 69 SB On-Rp N over IH 69 SB Off-Rp L 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 IH 69 SB On-Rp N over IH 69 SB Off-Rp L carry?

About 14,453 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is IH 69 SB On-Rp N over IH 69 SB Off-Rp L?

The structure is 303 ft (92.4 m) long with a longest span of 58 ft (17.7 m) and a deck 32 ft wide.

Who owns IH 69 SB On-Rp N over IH 69 SB Off-Rp L?

It is owned by the State Highway Agency.