US Bridges

FM 2100 SB over Gum Gully

Good

Harris County, Texas · 5.5 MI N of US 90 · Structure no. 121020106204200

Built
2023
2 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
95 ft
1 main span
Daily traffic
7,864
2023 count
Owner
State
State Highway Agency

About this bridge

FM 2100 SB over Gum Gully is a prestressed concrete stringer/multi-beam or girder carrying FM 2100 SB over Gum Gully in Harris County, Texas. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,864 vehicles a day, roughly 3% of them trucks, projected to reach 9,594 by 2042. The structure is 95 ft (29 m) long and 55 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 2100 SB
CrossesGum Gully
Location5.5 MI N of US 90
RouteState Highway 2100
CountyHarris County
StateTexas
Coordinates29.96125, -95.08422
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length95 ft (29 m)
Longest span95 ft (29 m)
Deck width55 ft (16.8 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,864 (2023)
Projected traffic9,594 by 2042
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 2100 SB over Gum Gully built?

It was built in 2023, making it 2 years old in 2025.

What condition is FM 2100 SB over Gum Gully 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 December 2024.

How much traffic does FM 2100 SB over Gum Gully carry?

About 7,864 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is FM 2100 SB over Gum Gully?

The structure is 95 ft (29 m) long with a longest span of 95 ft (29 m) and a deck 55 ft wide.

Who owns FM 2100 SB over Gum Gully?

It is owned by the State Highway Agency.