US Bridges

IH 45 SB over SH 3 (monroe Rd)

Good

Harris County, Texas · 2.6 MI SE of IH 610 · Structure no. 121020050003299

Built
1991
34 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
285 ft
1 main span
Daily traffic
113,880
2017 count
Owner
State
State Highway Agency

About this bridge

IH 45 SB over SH 3 (monroe Rd) is a prestressed concrete stringer/multi-beam or girder carrying IH 45 SB over SH 3 (monroe Rd) in Harris County, Texas. It was built in 1991, so it is 34 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 113,880 vehicles a day, roughly 7% of them trucks, projected to reach 109,240 by 2033. The structure is 285 ft (86.9 m) long and 73 ft wide.

CarriesIH 45 SB
CrossesSH 3 (monroe Rd)
Location2.6 MI SE of IH 610
RouteInterstate 45
StateTexas
Coordinates29.66911, -95.26249
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length285 ft (86.9 m)
Longest span115 ft (35.1 m)
Deck width73 ft (22.1 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113,880 (2017)
Projected traffic109,240 by 2033
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 45 SB over SH 3 (monroe Rd) built?

It was built in 1991, making it 34 years old in 2025.

What condition is IH 45 SB over SH 3 (monroe Rd) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2022.

How much traffic does IH 45 SB over SH 3 (monroe Rd) carry?

About 113,880 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is IH 45 SB over SH 3 (monroe Rd)?

The structure is 285 ft (86.9 m) long with a longest span of 115 ft (35.1 m) and a deck 73 ft wide.

Who owns IH 45 SB over SH 3 (monroe Rd)?

It is owned by the State Highway Agency.