US Bridges

FM 1123 over Moon Branch

Fair

Bell County, Texas · 6.70 MI NW of SH 95 · Structure no. 090140130801003

Built
1951
74 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
50 ft
2 main spans
Daily traffic
425
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1123 over Moon Branch is a concrete slab carrying FM 1123 over Moon Branch in Bell County, Texas. It was built in 1951, so it is 74 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 425 vehicles a day, roughly 6% of them trucks, projected to reach 380 by 2035. The structure is 50 ft (15.2 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM 1123
CrossesMoon Branch
Location6.70 MI NW of SH 95
RouteState Highway 1123
CountyBell County
StateTexas
Coordinates30.94478, -97.44003
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length50 ft (15.2 m)
Longest span25 ft (7.6 m)
Deck width21 ft (6.5 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2020)
Projected traffic380 by 2035
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$392,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1123 over Moon Branch built?

It was built in 1951, making it 74 years old in 2025.

What condition is FM 1123 over Moon Branch 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 February 2023.

How much traffic does FM 1123 over Moon Branch carry?

About 425 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is FM 1123 over Moon Branch?

The structure is 50 ft (15.2 m) long with a longest span of 25 ft (7.6 m) and a deck 21 ft wide.

Who owns FM 1123 over Moon Branch?

It is owned by the State Highway Agency.